Log in

Relevant bibliographies by topics / Tartrate complexes / Journal articles

To see the other types of publications on this topic, follow the link: Tartrate complexes.

Journal articles on the topic 'Tartrate complexes'

Author: Grafiati

Published: 30 May 2022

Last updated: 31 May 2022

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the top 50 journal articles for your research on the topic 'Tartrate complexes.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Browse journal articles on a wide variety of disciplines and organise your bibliography correctly.

1

Potvin, Pierre G., and Benjamin G. Fieldhouse. "An NMR study of mixed, tartrate-containing TiIV complexes." Canadian Journal of Chemistry 73, no. 3 (March 1, 1995): 401–13. http://dx.doi.org/10.1139/v95-053.

Full text

Abstract:

The reactions of amines and amino alcohols with diisopropyl or diethyl R,R- or S,S-tartrate and Ti(OiPr)4 were examined by 1H and 13C NMR to obtain and characterize nonfluxional complexes with the tartrate units in novel binding modes. The mildly acidic 8-hydroxyquinoline and N-phenyl-N-benzoylhydroxylamine selectively formed the products of a double OiPr substitution, Ti2(tartrate)2(ligand)2(OiPr)2, and the products of double tartrate substitution, Ti(ligand)2(OiPr)2, while 2,4-pentanedione formed only the latter Basic amino alkanols formed diastereomerically pure Ti2(tartrate)2(aminoalkoxide)(OiPr)3 species. N,N-Dimethyl-2-aminoethanol (Hdmae) also and uniquely formed monomeric Ti(tartrate)2(Hdmae)2 species that could be described as doubly zwitterionic. Secondary or tertiary amines formed triply C2-symmetric Ti3(tartrate)4(amine)2(OiPr)4 assemblies. Some minor components were believed to be μ-OiPr species. All mixed complexes except Ti(tartrate)2(Hdmae)2 contained chelating and bridging tartrate units, without coordination by ester carbonyls. A nonchelating, nonbridging tartrate unit was also present in the amino alcohol cases. Primary amines, aromatic amines, and hydrazines all failed to provide identifiable complexes. As well, N,N-dibenzylhydroxylamine failed to generate in solution the complex that had previously been characterized by X-ray crystallography. Amidst the rich chemistry of TiIV-tartrate systems, the evident selectivities in product formation were ascribed to macro-ring closures that are specifically directed by the electronic nature of the addend. Transient OiPr-bridged intermediates were also implicated. Keywords: mixed TiIV alkoxides, chiral TiIV alkoxides, enantiospecific complexation.

APA, Harvard, Vancouver, ISO, and other styles

2

Prananto, Yuniar Ponco, Rafi Dwiasis Wibisono, Sasti Gona Fadhilah, Rachmat Tjahjanto, Darjito, and Firsta Luthfiani Salsabila. "Crystallization of Mn(II) and Cd(II) Complexes in A Water-Methanol System: Tartrate vs Nicotinamide Ligand Selectivity." Acta Chimica Asiana 5, no. 1 (April 27, 2022): 166–72. http://dx.doi.org/10.29303/aca.v5i1.114.

Full text

Abstract:

Ligand selectivity of tartrate vs nicotinamide in a water-methanol system has been observed in the crystallization of Mn(II) and Cd(II) complexes. These complexes were crystallized at room temperature by a layered solution technique using a water-methanol mixture solvent in a M(II):tartrate:nicotinamide (M = Mn, Cd) molar ratio of 1:1:2. Complexes of M(II)-nicotinamide and M(II)-tartrate were also prepared for data comparison. Analysis of the crystals by infrared spectroscopy, powder-X-ray diffraction and qualitative anion test showed that in a presence of both tartrate and nicotinamide, the Mn(II) forms neutral Mn(II)-tartrate hydrate complex, whereas the Cd(II) forms ionic Cd(II)-nicotinamide chloride complex. In the case of Mn(II) complex, tartrate tend to coordinate as ligand than the nicotinamide, although molar ratio of nicotinamide was doubled than that of tartrate ligand. In contrast, the neutral nicotinamide ligand is more predominant to coordinate in the Cd(II) complex than the anionic tartrate. The tartrate-nicotinamide ligand selectivity in the crystallization of Mn(II) and Cd(II) complexes is likely due to the use of tartrate salt as precursor and the choice of solvent mixture. In addition, powder-XRD analysis confirms that there was no indication of M(II)-tartrate and M(II)-nicotinamide that co-crystallized together at the same time by both metal ions.

APA, Harvard, Vancouver, ISO, and other styles

3

Bott, Raymond C., Graham Smith, Dalius S. Sagatys, Daniel E. Lynch, and Colin H. L. Kennard. "Group 15 Complexes with α-Hydroxy Carboxylic Acids: 7. The Preparation and Structure Determination of Sodium (+)-Tartrato Arsenate(III), [Na8As10(C4H2O6)8(C4H3O6)2(H2O)19]n; Silver(I) (+)-Tartrato Arsenate(III), [Ag9As10(C4H2O6)9(C4H3O6)(H4As2O5) (H2O)10]n and Rubidium Citrato Antimonate(III), [Rb2Sb4(C6H5O7)2(C6H6O7)2(C6H7O7)4(H2O)2]." Australian Journal of Chemistry 53, no. 12 (2000): 917. http://dx.doi.org/10.1071/ch00138.

Full text

Abstract:

The structures of sodium (+)-tartrato arsenate(III),[Na8As10(C4H2O6)8(C4H3O6)2(H2O)19]n(1), silver (+)-tartrato arsenate(III),[Ag9As10(C4H2O6)9(C4H3O6)(H4As2O5)(H2O)10](2) and rubidium citrato antimonate(III)[Rb2Sb4(C6H6O7)6(C6H7O7)2(H2O)2](3) have been determined by X-ray methods and refined to residuals of 0.085(1), 0.072 (2) and 0.065 (3) for 5018, 4487 and 8207 observed reflections,respectively. The (+)-tartrato complexes (1) and (2) are similar instructure to the two known isomorphous silver(I) (+)-tartratoarsenate(III) complexes in that independent anionic[As2(tartrate)2] dimericcages are linked to the sodium or silver counter-cations, respectively,through free carboxyl oxygen atoms. However, the structures are made morecomplex by the presence of labile water molecules in the lattice, resulting insome disorder. Furthermore, charge balance in both (1) and (2) requires thepresence of two and one tri-negative tartrato units, respectively, among theten independent tartrate units in each structure, an unusual feature for Asand Sb complexes with this ligand species. Bond distances within the fivearsenic(III)-(+)-tartrate dimers in each structure are: As–O(hydroxy), 1.75(2)–1.84(2) Å (1); 1.75(3)–1.83(2) Å(2) and As–O (carboxy), 1.94(2)–2.13(3) Å (1);1.95(2)–2.14(2) Å (2). In addition, the structure of (2) has twoshort Ag–As bonds [2.500, 2.524(3) Å] in the terminalsites of two of the f ive independent dimers, as well as an additionalAg–As bond [2.613(4) Å] to an unusual dimeric arseniousacid residue(H4As2O5),part of an As2AgO3 hetero-ringforming the polymeric network structure. The antimony(III) citrate complex (3)is isomorphous and isostructural with the previously reported potassiumanalogue which involves mixed-valence citrato ligands in conventionalbis-chelate four-coordination about the antimony centres, linked by bothseven- and eight-coordinate rubidium ions [Rb–O,2.743(10)–3.102(9) Å]. The arsenic and antimony atoms in allcompounds have typical distorted pseudo-trigonal bipyramidal stereochemistry.

APA, Harvard, Vancouver, ISO, and other styles

4

Selvaraj, M., S. Thamotharan, Siddhartha Roy, and M. Vijayan. "X-ray studies of crystalline complexes involving amino acids and peptides. XLIV. Invariant features of supramolecular association and chiral effects in the complexes of arginine and lysine with tartaric acid." Acta Crystallographica Section B Structural Science 63, no. 3 (May 16, 2007): 459–68. http://dx.doi.org/10.1107/s010876810701107x.

Full text

Abstract:

The tartaric acid complexes with arginine and lysine exhibit two stoichiometries depending upon the ionization state of the anion. The structures reported here are DL-argininium DL-hydrogen tartrate, bis(L-argininium) L-tartrate, bis(DL-lysinium) DL-tartrate monohydrate, L-lysinium D-hydrogen tartrate and L-lysinium L-hydrogen tartrate. During crystallization, L-lysine preferentially interacts with D-tartaric acid to form a complex when DL-tartaric acid is used in the experiment. The anions and the cations aggregate into separate alternating layers in four of the five complexes. In bis(L-argininium) L-tartrate, the amino acid layers are interconnected by individual tartrate ions which do not interact among themselves. The aggregation of argininium ions in the DL- and the L-arginine complexes is remarkably similar, which is in turn similar to those observed in other dicarboxylic acid complexes of arginine. Thus, argininium ions have a tendency to assume similar patterns of aggregation, which are largely unaffected by a change in the chemistry of partner molecules such as the introduction of hydroxyl groups or a change in chirality or stoichiometry. On the contrary, the lysinium ions exhibit fundamentally different aggregation patterns in the DL–DL complexes on the one hand and L–D and L–L complexes on the other. Interestingly, the pattern in the L–D complex is similar to that in the L–L complex. The lysinium ions in the DL–DL complex exhibit an aggregation pattern similar to those observed in the DL-lysine complexes involving other dicarboxylic acids. Thus, the effect of change in the chirality of a subset of the component complexes could be profound or marginal, in an unpredictable manner. The relevant crystal structures appear to indicate that the preference of L-lysine for D-tartaric acid is perhaps caused by chiral discrimination resulting from the amplification of a small energy difference.

APA, Harvard, Vancouver, ISO, and other styles

5

Bezryadin, S. G., V. V. Chevela, O. P. Ajsuvakova, V. Yu Ivanova, and D. V. Kuzyakin. "Titanium(iv) tartrate complexes in aqueous solutions." Russian Chemical Bulletin 64, no. 11 (November 2015): 2655–62. http://dx.doi.org/10.1007/s11172-015-1204-z.

Full text

APA, Harvard, Vancouver, ISO, and other styles

6

Spaether, Wolf, Gerhard Erker, Mathias Rump, Carl Krueger, and Joerg Kuhnigk. "Generation of Dinuclear Tartrate-Bridged Dicationic Titanocene Complexes." Organometallics 14, no. 6 (June 1995): 2621–23. http://dx.doi.org/10.1021/om00006a004.

Full text

APA, Harvard, Vancouver, ISO, and other styles

7

Todorovsky, D. S., M. M. Getsova, and M. M. Milanova. "Preparation and Characterization of Lanthanum‐Titanum Tartrate Complexes." Synthesis and Reactivity in Inorganic and Metal-Organic Chemistry 33, no. 2 (January 6, 2003): 223–40. http://dx.doi.org/10.1081/sim-120017782.

Full text

APA, Harvard, Vancouver, ISO, and other styles

8

Jia, Yihong, Asma A. Alothman, Rui Liang, Xiaoyong Li, Weiyi Ouyang, Xiangdong Wang, Yong Wu, et al. "Oligomeric (Salen)Mn(III) Complexes Featuring Tartrate Linkers Immobilized over Layered Double Hydroxide for Catalytically Asymmetric Epoxidation of Unfunctionalized Olefins." Materials 13, no. 21 (October 29, 2020): 4860. http://dx.doi.org/10.3390/ma13214860.

Full text

Abstract:

A series of oligomeric (salen)Mn(III) complexes featuring tartrate linkers were prepared and immobilized over layered double hydroxide, and then used as catalysts for asymmetric epoxidation of unfunctionalized olefins. Comprehensive characterizations including 1H NMR, FT-IR, UV-Vis, elemental analysis, GPC, and ICP-AES were used to illustrate structures of oligomeric (salen)Mn(III) complexes, while powdered XRD, nitrogen physisorption, together with XPS studies provided further details to detect structures of heterogeneous catalysts. Interestingly, scanning electron microscopy found an interesting morphology change during modification of layered supporting material. Catalytic experiments indicated that configuration of major epoxide products was determined by salen chirality more than that of tartrate linker, but enantioselectivity (e.e. values) could be enhanced when tartrate and salen showed identical chiral configurations. Furthermore, the (R,R)-salen moieties linked with (R,R)-tartrate spacers usually offered higher enantioselectivity compared to other combinations. Lastly, Zn(II)/Al(III) layered double hydroxide played as a rigid supporting material in catalysis, showing positive chiral induction and high recycling potential in catalytic reactions.

APA, Harvard, Vancouver, ISO, and other styles

9

Sakurai, Hiromu, Satoko Funakoshi, and Yusuke Adachi. "New developments of insulinomimetic dinuclear vanadyl(IV)-tartrate complexes." Pure and Applied Chemistry 77, no. 9 (January 1, 2005): 1629–40. http://dx.doi.org/10.1351/pac200577091629.

Full text

Abstract:

The number of patients suffering from diabetes mellitus (DM) is increasing year by year throughout the world. In 2003, the world population was 6.3 billion, and the number of patients with DM in the adult population (20-79 years old) was 0.194 billion, which corresponded to 5.1 % of all disease incidence in that age range. In 2005, it is forecasted that the world population will increase to 8.0 billion and the ratio of DM to total disease incidence will increase to 6.3 %, with a disproportionate number of cases in Southeast Asia, the West Pacific, Central Asia, and North, Central, and South America. To treat Type 1 and Type 2 DM clinically, insulin preparations and synthetic drugs, respectively, have been used. However, these treatments are associated with some problems, such as several times of daily insulin injections following blood glucose monitoring and side effects in the case of the synthetic drugs. Consequently, a new class of therapeutic compounds is anticipated. After many trials, vanadium-containing complexes have been proposed to improve and treat both types of DM by in vivo experiments. We present an overview of insulinomimetic and antidiabetic vanadyl (+4 vanadium, V) complexes, and propose new candidates for dinuclear vanadyl complexes with naturally occurring ligands. The current state of research on the dinuclear vanadyl(IV)-tartrate complexes is described in regard to the physicochemical characteristics, in vitro insulinomimetic and in vivo blood-glucose-lowering effects of the prepared complexes.

APA, Harvard, Vancouver, ISO, and other styles

10

Tipton, Peter A., and Jack Peisach. "Pulsed EPR analysis of tartrate dehydrogenase active-site complexes." Biochemistry 30, no. 3 (January 1991): 739–44. http://dx.doi.org/10.1021/bi00217a024.

Full text

APA, Harvard, Vancouver, ISO, and other styles

11

Dragan, Felicia, I. Bratu, Gh Borodi, Mihaela Toma, A. Hernanz, S. Simon, Gh Cristea, and R. Peschar. "Spectroscopic investigation of β-cyclodextrin -metoprolol tartrate inclusion complexes." Journal of Inclusion Phenomena and Macrocyclic Chemistry 59, no. 1-2 (March 21, 2007): 125–30. http://dx.doi.org/10.1007/s10847-007-9304-5.

Full text

APA, Harvard, Vancouver, ISO, and other styles

12

Potvin, Pierre G., Robert Gau, Patrick C. C. Kwong, and Stephen Bianchet. "The solution structures of chiral Ti4+ alkoxides." Canadian Journal of Chemistry 67, no. 10 (October 1, 1989): 1523–37. http://dx.doi.org/10.1139/v89-233.

Full text

Abstract:

1,4-Di-O-methyl-L-threitol and 1,2,5,6-tetra-O-methyl-L-mannitol were prepared by new, more convenient, and higher yielding routes. These and 1,2;5,6-di-O-isopropylidene-D-mannitol formed 2:2 complexes with Ti(OiPr)4, but did not readily form 1:2 complexes in the presence of excess Ti4+. 1H and 13C nuclear magnetic resonance spectra showed that the structures in solution of the 2:2 complexes were analogous to solid-state structures of tartaric acid derivatives, i.e., possessing bridging diolate oxygens. In contrast, R,R- and meso-diisopropyl tartrates, Ν,Ν′-dibenzyl tartramide, and Ν,Ν′-di(2-phenyl)ethyl tartramide behaved very differently. The tartramides formed mixtures of complexes that became dominated by 2:3 complexes in the presence of excess Ti(OiPr)4. Two tertiary tartramides failed to provide well-defined complexes. The R,R-tartrate formed a monocyclic (nonbridged) 2:2 complex, but an equilibrating mixture of 1:2 and 2:2 complexes with excess Ti4+. The equilibrium shifted upon cooling toward a 1:2 complex possessing a bridging diolate oxygen, as did the meso 1:2 complex. Other temperature-dependent phenomena were also studied. Keywords: titanium(IV), chiral alkoxides, solution structures, NMR, Sharpless catalysts.

APA, Harvard, Vancouver, ISO, and other styles

13

Beeson, Harold D., Robert E. Tapscott, and Eileen N. Duesler. "Electronic and molecular structure of DL vanadyl(IV) tartrate(4−) and methyl-substituted tartrate(4−) binuclear complexes." Inorganica Chimica Acta 102, no. 1 (August 1985): 5–13. http://dx.doi.org/10.1016/s0020-1693(00)89067-2.

Full text

APA, Harvard, Vancouver, ISO, and other styles

14

Burminova, Victoria S., Alexey V. Nistratov, and Vitaly N. Klushin. "EQUILIBRIUM OF ION-EXCHANGE EXTRACTION OF COPPER-ORGANIC COMPLEXES FROM RINSING WATER." IZVESTIYA VYSSHIKH UCHEBNYKH ZAVEDENIY KHIMIYA KHIMICHESKAYA TEKHNOLOGIYA 61, no. 1 (December 21, 2017): 96. http://dx.doi.org/10.6060/tcct.20186101.5563.

Full text

Abstract:

The complexes of copper with sodium tartrate, Trilon B and citric acid, present for example in rinsing water of galvanic industry, because of their resistance they are a challenge to extract by chemical methods, while their emission rezults in environmental and economic damages. Proposed for their extraction ion exchange was carried out with anion-exchange resins Purofine PFA600, AV-17-8 of gel type and Purolite A500, ChFO of macroporous type. At purifying of initial solutions with copper concentration of 10 mg/l under static conditions according to atomic absorption spectrometry the degree of purification 95.4-99.9% was found for all ion-exchangers. The study of equilibrium of ion exchange of named complexes from solutions with copper concentration of 10-100 mg/l by various ion exchangers has identified different types of isotherms, mostly approximated by the Langmuir and Freundlich models, and calculated parameters provide comparison of selectivity and static exchange capacity of the absorbents. Calculated limiting capacity of the macroporous ion-exchanger is reduced in row of ligands: sodium tartrate > Trilon B > citric acid; it is maximal for copper-tartrate complex for Purofine PFA600. Considering the regeneration ability studied ion-exchangers are promising for deep extraction of copper-organic complexes from dilute solutions, but need determination of dynamic and kinetic characteristics of this process.Forcitation:Burminova V.S., Nistratov A.V., Klushin V.N. Equilibrium of ion-exchange extraction of copper-organic complexes from rinsing water. Izv. Vyssh. Uchebn. Zaved. Khim. Khim. Tekhnol. 2018. V. 61. N 1. P. 96-101

APA, Harvard, Vancouver, ISO, and other styles

15

Pradhan, Susmita, Sudip Biswas, Dipak K. Das, Radhaballabh Bhar, Rajib Bandyopadhyay, and Panchanan Pramanik. "An efficient electrode for simultaneous determination of guanine and adenine using nano-sized lead telluride with graphene." New Journal of Chemistry 42, no. 1 (2018): 564–73. http://dx.doi.org/10.1039/c7nj03308g.

Full text

Abstract:

Herein, lead telluride (PbTe) nanocrystals were chemically synthesized at room temperature via reduction of homogeneous mixtures of tartrate complexes of Pb²⁺ and Te⁴⁺ with sodium borohydride.

APA, Harvard, Vancouver, ISO, and other styles

16

Karabulut, B., R. Tapramaz, and F. Köksal. "Epr Spectra of VO2+ Doped in Na2C4H4O6 Single Crystals." Zeitschrift für Naturforschung A 59, no. 10 (October 1, 2004): 669–73. http://dx.doi.org/10.1515/zna-2004-1008.

Full text

Abstract:

EPR spectra of VO2+ ions in di-sodium tartrate, [Na2C4H4O6], single crystal and powder spectra have been studied at room temperature. The angular variation of the EPR spectra has shown that three different VO2+ complexes are located in different chemical environments, and each environment contains two magnetically inequvalent sites. The spin Hamiltonian parameters are determined, and these parameters have been used to assess the bonding coefficients of the VO2+ ion in the di-sodium tartrate lattice. The parallel and perpendicular components of axially symmetric g and hyperfine tensors are evaluated. The results are discussed.

APA, Harvard, Vancouver, ISO, and other styles

17

Mahmood, N., A. Burke, S. Hussain, R. M. Anner, and B. M. Anner. "Inhibition of the Production of HIV-1 from Chronically Infected H9 Cells by Metal Compounds and Their Complexes with L-cysteine or N-acetyl-L-cysteine." Antiviral Chemistry and Chemotherapy 6, no. 3 (June 1995): 187–89. http://dx.doi.org/10.1177/095632029500600308.

Full text

Abstract:

A number of metal compounds and their complexes with cysteine and N-acetyl-cysteine (NAC) were tested for their ability to inhibit HIV replication in vitro, specifically in chronically infected H9 cells (which produce virus continuously). Out of seven metal compounds tested, only bismuth nitrate and bismuth sodium tartrate inhibited virus production in chronically infected H9 cells. The complexes made with metals and cysteine or NAC had slightly improved selective indices.

APA, Harvard, Vancouver, ISO, and other styles

18

Gácsi, Attila, Bence Kutus, Zita Csendes, Tünde Faragó, Gábor Peintler, István Pálinkó, and Pál Sipos. "Calcium l-tartrate complex formation in neutral and in hyperalkaline aqueous solutions." Dalton Transactions 45, no. 43 (2016): 17296–303. http://dx.doi.org/10.1039/c6dt03463b.

Full text

Abstract:

In hyper-alkaline aqueous solutions, Ca²⁺ and l-tartrate (Tar²⁻) ions form CaTarH₋₁⁻_(aq) and CaTarH₋₂²⁻_(aq) complexes containing deprotonated alcoholate group(s).

APA, Harvard, Vancouver, ISO, and other styles

19

Brehme, Cheryl Shaffer, Steven Roman, Jennifer Shaffer, and Robert Wolfert. "Tartrate-Resistant Acid Phosphatase Forms Complexes with α2-Macroglobulin in Serum." Journal of Bone and Mineral Research 14, no. 2 (February 1, 1999): 311–18. http://dx.doi.org/10.1359/jbmr.1999.14.2.311.

Full text

APA, Harvard, Vancouver, ISO, and other styles

20

Sharma, Jyoti, Arvind Kumar, and B. K. Puri. "Mixed Ligand Complexes of Chromium (III) Ethylenediamine Tartrate: A Polarographic Study." Journal of the Chinese Chemical Society 32, no. 4 (December 1985): 425–30. http://dx.doi.org/10.1002/jccs.198500066.

Full text

APA, Harvard, Vancouver, ISO, and other styles

21

Dai, Runan, Changyuan Yu, Jing Gou, Yeqing Lan, and Jingdong Mao. "Photoredox pathways of Cr(III)–tartrate complexes and their impacting factors." Journal of Hazardous Materials 186, no. 2-3 (February 2011): 2110–16. http://dx.doi.org/10.1016/j.jhazmat.2010.12.127.

Full text

APA, Harvard, Vancouver, ISO, and other styles

22

Mrkonjić Zajkoska, Simona, Edmund Dobročka, Selma Hansal, Rudolf Mann, Wolfgang E. G. Hansal, and Wolfgang Kautek. "Tartrate-Based Electrolyte for Electrodeposition of Fe–Sn Alloys." Coatings 9, no. 5 (May 10, 2019): 313. http://dx.doi.org/10.3390/coatings9050313.

Full text

Abstract:

Magnetic properties of the sustainable Fe–Sn alloys are already known. However, there is lack of information in the field of Fe–Sn electrodeposition. In the present study, a novel Fe(III)–Sn(II) electrolyte with tartaric acid as a single complexing agent is introduced. The influence of the pH and the current density on the structural properties of the Fe–Sn deposit was studied. The stability of the electrolytes as a main attribute of sustainability was tested. The ferromagnetic phases Fe5Sn3 and Fe3Sn were electrodeposited for the first time, and it was found that the mechanism of the Fe–Sn deposition changes from normal to anomalous at a pH value 3.0 and a current density of approximately 30 mA/cm2. A possible reason for the anomalous deposition of Fe–Sn is the formation of Fe-hydroxides on the cathode surface. Two electrolyte stability windows exist: The first stability window is around a pH value of 1.8 where bimetallic Fe–Sn tartrate complexes were formed, and second one is around a pH value of 3.5 where most of the Sn ions were present in the form of [Sn(tart)2]2− and Fe in the form of [Fe(tart)]+ complexes.

APA, Harvard, Vancouver, ISO, and other styles

23

Ohno, Keiji, Honami Tanuma, Yukiko Kusano, Sumio Kaizaki, Akira Nagasawa, and Takashi Fujihara. "Luminescence of tartrate bridged dinuclear 2,2′-bipyridine platinum(ii) complexes: emission color controlled by intra- and inter-molecular interactions in the solid state." Dalton Transactions 46, no. 23 (2017): 7612–18. http://dx.doi.org/10.1039/c7dt00745k.

Full text

Abstract:

Mono- and dinuclear Pt^II complexes with tartrate (tartH₂²⁻) [Pt(bpy)(tartH₂)] and [{Pt(bpy)}₂(μ-tart)], respectively, in crystals exhibited an emission color controlled by intra- and inter-molecular Pt–Pt and/or π–π interactions.

APA, Harvard, Vancouver, ISO, and other styles

24

Nguyen Thi Ha, Chi, Nhiem Dao Ngoc, Chuc Pham Ngoc, Dung Doan Trung, and Bac Nguyen Quang. "Synthesis and application of rare earth organic fertilizers on cucumbers." Vietnam Journal of Catalysis and Adsorption 10, no. 3 (June 30, 2021): xx. http://dx.doi.org/10.51316/jca.2021.044.

Full text

Abstract:

Organic fertilizers of La, Nd, and Pr with tartaric acid ligands have been successfully synthesized. The efficiency of the complexing reaction was over 80%. The molecular formula of the complex was Ln2(C4H4O6)3.nH2O (Ln: La, Nd, Pr). The synthesized complexes were tested for the ability to stimulate growth and improve productivity for Thai cucumber. The study results showed that the complexes reduced the growth time of the plants and increased the yield by 20%. Yields of cucumbers sprayed with rare earth tartrate complexes reached ~62 tons/ha and increased by 20% compared with control samples.

APA, Harvard, Vancouver, ISO, and other styles

25

Lovelace, L., K. Lewiński, C. G. Jakob, R. Kuciel, W. Ostrowski, and L. Lebioda. "Prostatic acid phosphatase: structural aspects of inhibition by L-(+)-tartrate ions." Acta Biochimica Polonica 44, no. 4 (December 31, 1997): 673–78. http://dx.doi.org/10.18388/abp.1997_4369.

Full text

Abstract:

The crystal structure of the complex between rat-prostatic acid phosphatase (PAP) and L-(+)-tartrate (Lindqvist et al., J. Biol. Chem., 1993, 268, 20744-20746) contains the model of the ligand with incorrect chirality. We report here the correct model and discuss the relation between this model and the model of the inhibitory complexes between PAP and oxy-anions.

APA, Harvard, Vancouver, ISO, and other styles

26

Farrell, Harold M., Beverly E. Maleeff, Edward D. Wickham, and Cecilia T. Leung. "Ultrastructural localization of acid phosphatase in lactating rat mammary gland." Proceedings, annual meeting, Electron Microscopy Society of America 47 (August 6, 1989): 1054–55. http://dx.doi.org/10.1017/s0424820100157255.

Full text

Abstract:

Acid phosphatases occur in a variety of mammalian tissues. Generally these enzymes can be divided into degradative enzymes (lysosomal) which are tartrate inhibited and general acid phosphatases which are not tartrate sensitive. The metabolic function of the latter class of enzymes is uncertain, but many phosphatases reverse the regulatory phosphorylation of enzymes, carried out by specific protein kinases. Mammary tissue actively accumulates casein, calcium and inorganic phosphate in secretory vesicles; these components subsequently condense into the colloidal complexes (casein mice lies) found in skim milk. In addition, tartrate insensitive acid phosphatases are found in mammary secretory tissue and in milk We therefore investigated the cytochemical distribution of mammary acid phosphatase to determine if any activity is associated with the endomembrane system responsible for the secretion of casein micelles.Tissue from lactating female Sprague-Dawley rats, 8-10 days postpartum, was excised in blocks of 3 to 5 mm, immediately placed in ice-cold fixative (2% formaldehyde,0.25% glutaraldehyde in 0.lM cacodylate buffer, pH 7.4) , and minced with a razor blade. After fixation for 15 minutes, the finely minced tissue was transferred to 0.lM cacodylate buffer containing 8% sucrose (w/v) and 10% (v/v) dimethyl sulfoxide (DMSO) and kept overnight at 40°C.

APA, Harvard, Vancouver, ISO, and other styles

27

Balaraman, Kaluvu, Ravichandran Vasanthan, and Venkitasamy Kesavan. "Enantioselective fluorination of β-ketoesters using tartrate derived bidentate bioxazoline-Cu(II) complexes." Tetrahedron: Asymmetry 24, no. 15-16 (August 2013): 919–24. http://dx.doi.org/10.1016/j.tetasy.2013.07.004.

Full text

APA, Harvard, Vancouver, ISO, and other styles

28

Casella, Innocenzo G. "Electrodeposition of cobalt oxide films from carbonate solutions containing Co(II)–tartrate complexes." Journal of Electroanalytical Chemistry 520, no. 1-2 (February 2002): 119–25. http://dx.doi.org/10.1016/s0022-0728(02)00642-3.

Full text

APA, Harvard, Vancouver, ISO, and other styles

29

Hayashi, Masahiko, Tohru Matsuda, and Nobuki Oguni. "Enantioselective trimethylsilylcyanation of some aldehydes catalysed by titanium alkoxide–chiral dialkyl tartrate complexes." J. Chem. Soc., Perkin Trans. 1, no. 22 (1992): 3135–40. http://dx.doi.org/10.1039/p19920003135.

Full text

APA, Harvard, Vancouver, ISO, and other styles

30

He, J. Z. "Comparison of Adsorption of Phosphate, Tartrate, and Oxalate on Hydroxy Aluminum Montmorillonite Complexes." Clays and Clay Minerals 47, no. 2 (1999): 226–33. http://dx.doi.org/10.1346/ccmn.1999.0470213.

Full text

APA, Harvard, Vancouver, ISO, and other styles

31

Gylienė, Ona, Rima Binkienė, and Rita Butkienė. "Sorption of Cu(II) complexes with ligands tartrate, glycine and quadrol by chitosan." Journal of Hazardous Materials 171, no. 1-3 (November 2009): 133–39. http://dx.doi.org/10.1016/j.jhazmat.2009.05.119.

Full text

APA, Harvard, Vancouver, ISO, and other styles

32

Pozdnyakov, Ivan P., Alexander V. Kolomeets, Victor F. Plyusnin, Alexey A. Melnikov, Victor O. Kompanets, Sergey V. Chekalin, Nikolai Tkachenko, and Helge Lemmetyinen. "Photophysics of Fe(III)–tartrate and Fe(III)–citrate complexes in aqueous solutions." Chemical Physics Letters 530 (March 2012): 45–48. http://dx.doi.org/10.1016/j.cplett.2012.01.051.

Full text

APA, Harvard, Vancouver, ISO, and other styles

33

van Grieken, Rafael, Rafael A. Garcia, Guillermo Calleja, and Jose Iglesias. "Novel titanocene–tartrate complexes as catalysts for the asymmetric epoxidation of allylic alcohols." Catalysis Communications 8, no. 4 (April 2007): 655–60. http://dx.doi.org/10.1016/j.catcom.2006.08.021.

Full text

APA, Harvard, Vancouver, ISO, and other styles

34

Revanasiddappa, H. D., B. Vijaya, L. Shivakumar, and K. Shiva Prasad. "Synthesis, Structural Characterization, and Antimicrobial Activity Evaluation of New Binuclear Niobium(V) Tartrate Complexes with Biologically Important Drugs." ISRN Inorganic Chemistry 2013 (December 19, 2013): 1–7. http://dx.doi.org/10.1155/2013/760754.

Full text

Abstract:

The new binuclear niobium(V) complexes of the type [[NbO(L)C4H4O6]2C4H4O6] (where L = DMH, IMH, IPH, FPH, TMT) were prepared with biologically important drugs and characterized by using elemental analysis; IR, 1H-NMR, and UV-Vis spectral studies, and thermogravimetric analysis. The molar conductance measurement of all the complexes in DMF solution corresponds to 1 : 1 electrolytic nature. All complexes were of the pure diamagnetic character and were found to have six-coordinate octahedral geometry. The antimicrobial activity of these complexes has been screened against two Gram-positive and two Gram-negative bacteria. Antifungal activity against two different fungi has been evaluated and compared with controls. All the complexes inhibit the growth of both Gram-positive and Gram-negative bacteria to a competent level.

APA, Harvard, Vancouver, ISO, and other styles

35

Cırık, Işılay, Yunus Çelik, and Bünyamin Karabulut. "Theoretical and Experimental EPR Study of VO2+-Doped Ammonium Hydrogen Tartrate." Zeitschrift für Naturforschung A 70, no. 8 (August 1, 2015): 637–41. http://dx.doi.org/10.1515/zna-2015-0141.

Full text

Abstract:

AbstractWe studied the electron paramagnetic resonance (EPR) spectra of VO2+ ions in ammonium hydrogen tartrate (AHT) single crystals at room temperature. We determined the spin Hamiltonian parameters and the molecular bonding coefficients of the complex both in theoretical and experimental ways. The results indicate that the vanadium ion forms a tetragonally compressed octahedron and has a double bond with one of the oxygens in the axial position. This is the reason why the paramagnetic centre in the host crystal is axially symmetric as in most of the vanadyl ion-containing complexes.

APA, Harvard, Vancouver, ISO, and other styles

36

Poznyak, Sergey K., Vladislav V. Kharton, Jorge R. Frade, and Mário G. S. Ferreira. "Electroplating of Iron Films: Microstructural Effects of Alkaline Baths." Materials Science Forum 514-516 (May 2006): 88–92. http://dx.doi.org/10.4028/www.scientific.net/msf.514-516.88.

Full text

Abstract:

Several alkaline baths based on different complexing agents were examined for iron electroplating. The resultant films were characterized by X-ray diffraction (XRD) and scanning electron microscopy (SEM). It was shown that adherent and smooth iron coatings with uniform microstructure can be obtained using alkaline Fe (II) baths containing pyrophosphate and tartrate ions as complexing agents. The average grain size can be substantially decreased by glycine additions in the pyrophosphate bath. The faradaic efficiency in these electrolytes may achieve up to 40-50%. The tartrate-containing baths are characterized with a higher throwing power and an increased buffer capacity with respect to the pyrophosphate-based electrolytes. The resultant Fe coatings are single-phase, whilst substantial broadening of the XRD peaks indicates nano-scale grain size. The alkaline baths based on EDTA complexes of iron (III) give black dull iron deposits and are characterized by rather low cathodic current efficiencies, especially at low current densities.

APA, Harvard, Vancouver, ISO, and other styles

37

Jun, Seong Yup, Kyeong Doo Ryou, Seong Soo Hong, Gun Dae Lee, Hoy Yul Park, Dong Pil Kang, and Seong Soo Park. "Hydrothermal Syntheses of Nickel Nanosheets and Their Morphology." Materials Science Forum 510-511 (March 2006): 706–9. http://dx.doi.org/10.4028/www.scientific.net/msf.510-511.706.

Full text

Abstract:

Nanocrystalline nickel powders were prepared by chemical reduction of nickel chloride hydrate with different surfactant at moderate temperature in a pressurized vessel. Nickel nanosheets were generated successfully through reducing the nickel ion complexes, formed by sodium tartrate, at alkaline condition by hydrazine hydrate. The nanosheets and nanowires were characterized by the means of an X-ray diffractomer (XRD), a field emission scanning electron microscopy (FESEM), an energy dispersive X-ray spectrometer (EDS) and a high sensitive magnetometer (HSM).

APA, Harvard, Vancouver, ISO, and other styles

38

Mukhamedyarova, Lilia I., Sergey G. Bezryadin, Elena Yu Klukvina, Vladimir V. Chevela, and Valentina Yu Ivanova. "Composition, stability and stereo effects of zirconium(IV) dl-tartrate formation." Butlerov Communications 57, no. 2 (February 28, 2019): 28–34. http://dx.doi.org/10.37952/roi-jbc-01/19-57-2-28.

Full text

Abstract:

The system of zirconium (IV) – dl-tartaric acid for metal: ligand 1: 1, 1: 2 and 1: 3 ratios in aqueous solution has been studied by means of using potentiometric titration method in combination with mathematical modeling. The comparison of Bjerrum functions from pH for zirconium(IV) systems: d-tartaric acid and zirconium (IV): dl-tartaric acid, has revealed the following features in the behavior of the curves: the degree of titration for the complexes at a fixed pH value for systems with dl-tartaric acid is more than for d-acid. The CPESSP software complex has calculated the composition, stability constants and molar fractions of zirconium(IV) tartrate accumulation. It has been also found that at a ratio of 1: 1 for Zr (IV) and ligand (H4Tart) ions in the system under study ZrHTart+ is formed, which is tetramerized into Zr4Tart40 and, further, tetranuclear particles of varying degrees of deprotonization are formed, as well as mononuclear forms. In a strongly alkaline pH environment > 10, Bjerrum curves for d- and dl-tartaric acids overlap each other and correspond to hydroxocomplexes of varying degrees of titration. For the 1: 2 ratio, the composition of the complexes for the zirconium(IV) – dl-H4T system is slightly different; compared to the zirconium(IV) – dH4T system, differences are clearly observed for both low and high concentrations. Based on these data, a complex formation scheme in the Zr(IV) – dl-tartaric acid system has been proposed for all the ratios studied. The characteristics of stereoselective diastereomer formation have been calculated. It has been revealed that in the medium of racemic tartrate, ddd- and lll-Zr(H2Tart)2(HTart)3-forms, as well as Zr(H2Tart)(НTart)24-Zr(HTart)35- are formed on a stereoselective basis.

APA, Harvard, Vancouver, ISO, and other styles

39

Khan, Ahmad R., Debbie C. Crans, Rasa Pauliukaite, and Eugenijus Norkus. "Spectrometric and electrochemical investigation of vanadium(V) and vanadium(IV) tartrate complexes in solution." Journal of the Brazilian Chemical Society 17, no. 5 (October 2006): 895–904. http://dx.doi.org/10.1590/s0103-50532006000500012.

Full text

APA, Harvard, Vancouver, ISO, and other styles

40

Liu, Jing, Masa-aki Morikawa, Hairui Lei, Keita Ishiba, and Nobuo Kimizuka. "Hierarchical Self-Assembly of Luminescent Tartrate-Bridged Chiral Binuclear Tb(III) Complexes in Ethanol." Langmuir 32, no. 41 (October 10, 2016): 10597–603. http://dx.doi.org/10.1021/acs.langmuir.6b02254.

Full text

APA, Harvard, Vancouver, ISO, and other styles

41

Beecher, B. S., R. L. Koder, and P. A. Tipton. "Tartrate Dehydrogenase-Oxalate Complexes: Formation of a Stable Analog of a Reaction Intermediate Complex." Archives of Biochemistry and Biophysics 315, no. 2 (December 1994): 255–61. http://dx.doi.org/10.1006/abbi.1994.1497.

Full text

APA, Harvard, Vancouver, ISO, and other styles

42

Wang, Yan, Guang-Xiang Liu, You-Cun Chen, Kuai-Bing Wang, and Su-Gang Meng. "Two novel lanthanum–tartrate complexes with distinctive new topologies: Hydrothermal synthesis and crystal structures." Inorganica Chimica Acta 363, no. 11 (August 2010): 2668–72. http://dx.doi.org/10.1016/j.ica.2010.03.076.

Full text

APA, Harvard, Vancouver, ISO, and other styles

43

Palacios-Hernández, Teresa, Gustavo A. Hirata-Flores, Oscar E. Contreras-López, María E. Mendoza-Sánchez, Iracema Valeriano-Arreola, Enrique González-Vergara, and Miguel A. Méndez-Rojas. "Synthesis of Cu and Co metal oxide nanoparticles from thermal decomposition of tartrate complexes." Inorganica Chimica Acta 392 (September 2012): 277–82. http://dx.doi.org/10.1016/j.ica.2012.03.039.

Full text

APA, Harvard, Vancouver, ISO, and other styles

44

Jeon, Seung Yup, Eun Ju Chae, Won Ki Lee, Gun Dae Lee, Seong Soo Hong, Seog Young Yoon, and Seong Soo Park. "A Study for Synthesis of Nanobelt and Nanowire Nickel Powders by Wet Chemical Method." Materials Science Forum 544-545 (May 2007): 83–86. http://dx.doi.org/10.4028/www.scientific.net/msf.544-545.83.

Full text

Abstract:

Ni nanosheet has been prepared at various temperature and time with anion surfactant by chemical reduction of the nickel ion complexes formed from complexing reagent in a pressurized vessel. Sample was characterized by the means of an X-ray diffractomer (XRD), a field emission scanning electron microscopy (FESEM), an energy dispersive X-ray spectrometer (EDS), a selected-area electron diffraction (SAED) and a high sensitive magnetometer (HSM). The use of SDBS and sodium tartrate could be a key factor for the formation and growth of Ni nanosheet.

APA, Harvard, Vancouver, ISO, and other styles

45

Kondo, Yoshinori, James R. Green, and Jianwei Ho. "Tartrate-derived aryl aldehyde acetals in the asymmetric directed metalation of chromium tricarbonyl arene complexes." Journal of Organic Chemistry 58, no. 23 (November 1993): 6182–89. http://dx.doi.org/10.1021/jo00075a008.

Full text

APA, Harvard, Vancouver, ISO, and other styles

46

Wrobleski, James T., and Michael R. Thompson. "Structures and magnetism of rubidium and cesium salts of dimeric oxovanadium(IV) tartrate(4−) complexes." Inorganica Chimica Acta 150, no. 2 (November 1988): 269–77. http://dx.doi.org/10.1016/s0020-1693(00)90610-8.

Full text

APA, Harvard, Vancouver, ISO, and other styles

47

Balaraman, Kaluvu, Ravichandran Vasanthan, and Venkitasamy Kesavan. "ChemInform Abstract: Enantioselective Fluorination of β-Ketoesters Using Tartrate Derived Bidentate Bioxazoline-Cu(II) Complexes." ChemInform 45, no. 7 (January 31, 2014): no. http://dx.doi.org/10.1002/chin.201407030.

Full text

APA, Harvard, Vancouver, ISO, and other styles

48

HAYASHI, M., T. MATSUDA, and N. OGUNI. "ChemInform Abstract: Enantioselective Trimethylsilylcyanation of Some Aldehydes Catalyzed by Titanium Alkoxide-Chiral Dialkyl Tartrate Complexes." ChemInform 24, no. 12 (August 20, 2010): no. http://dx.doi.org/10.1002/chin.199312200.

Full text

APA, Harvard, Vancouver, ISO, and other styles

49

Paták, Michal, Oldřich Pytela, and Filip Bureš. "Tartrate- and imidazole-derived diketones and diols: preparation and stability constants of their Cu2+ complexes." Monatshefte für Chemie - Chemical Monthly 142, no. 11 (August 24, 2011): 1131–36. http://dx.doi.org/10.1007/s00706-011-0588-1.

Full text

APA, Harvard, Vancouver, ISO, and other styles

50

MITANI, Tsuyoshi, and Hiroshi YOKOI. "Characterization of the Complexes of Iron(III) with L-Tartrate in the Solvent Extraction System. Formation of Iron(III)-Cluster Complexes." NIPPON KAGAKU KAISHI, no. 9 (1993): 1052–58. http://dx.doi.org/10.1246/nikkashi.1993.1052.

Full text

APA, Harvard, Vancouver, ISO, and other styles

We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!