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Добірка наукової літератури з теми "Tridentate Ligands - Metal Complexes"

Автор: Grafiati
Опубліковано: 7 вересня 2023

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Статті в журналах з теми "Tridentate Ligands - Metal Complexes"

1

Alghamdi, Israa A., Mohamed Abdelbaset, and Ines El Mannoubi. "Mixed Ligand Complexes of Copper(II) and Cobalt(II) with Hydrazones Derivatives and ortho-Vanillin: Syntheses, Characterizations and Antimicrobial Activity." Oriental Journal of Chemistry 35, no. 6 (December 30, 2019): 1722–30. http://dx.doi.org/10.13005/ojc/350614.

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The purpose of this paper was to synthesis new mixed-ligand Cu(II) and Co(II) metal complexes utilizing bidentate and tridentate donor hydrazones derivatives as primary ligands and o-vanillin as co-ligand. The obtained compounds were characterized by elemental analysis, Infrared, UV-Vis., 1H-NMR, Mass spectra, molar conductance, thermal analysis and atomic absorption spectroscopy (ASS). Spectroscopic analysis results indicated that the hydrazone ligand (L1) behave as tridentate (ONO) and forms metal complexes having distorted square planar geometry. While the ligands (L2, L3 AND L4) behave as bidentate (NO) and forms metal complexes having octahedral geometry around the central metal atoms. The antimicrobial potentials were assessed for the ligand (L2) and its metal complexes only and were screened against six types of bacterial strains and one fungal strain. The antimicrobial activities results of the tested compounds showed enhanced activity of the complexes over their parent ligands.
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2

Hanan, Garry S., Dirk Volkmer, and Jean-Marie Lehn. "Coordination arrays — Synthesis and characterization of tetranuclear complexes of grid-type." Canadian Journal of Chemistry 82, no. 10 (October 1, 2004): 1428–34. http://dx.doi.org/10.1139/v04-092.

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A series of tetranuclear metal complexes of grid-type consisting of four bis-tridentate ligands and four divalent transition metal ions were synthesized and characterized. The 1H NMR spectra of diamagnetic complexes containing Zn(II), Cd(II), Fe(II), and Ru(II) was correlated to the radius of the metal ion. The UV–vis and electrochemical results indicated that the bridging ligand π* orbital and the dπ metal orbital are stabilized by complexation of more than one metal ion. Furthermore, the Co(II) and Fe(II) grids exhibit metal–metal interaction mediated by the bis-tridentate ligands as indicated by electrochemical and spectroscopic methods. These results provide guidelines for the design of larger grids bearing several metal centres in a square arrangement, which also represent potential components of molecular electronic devices.Key words: complexes with nitrogen ligands, octahedral metal ions, self-assembly, supramolecular chemistry.
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3

Polo-Cerón, Dorian. "Cu(II) and Ni(II) Complexes with New Tridentate NNS Thiosemicarbazones: Synthesis, Characterisation, DNA Interaction, and Antibacterial Activity." Bioinorganic Chemistry and Applications 2019 (July 1, 2019): 1–14. http://dx.doi.org/10.1155/2019/3520837.

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This paper reports the synthesis and detailed characterisation of copper(II) and nickel(II) complexes with tridentate thiosemicarbazone ligands H2L1 and H2L2 derived from 2-acetylpyrazine. The ligands and their metal complexes were characterised by different physicochemical techniques, including elemental and thermogravimetric analysis; UV-Vis, IR, 1H-NMR, and 13C-NMR spectroscopy; molar conductance measurements; and mass spectrometry. The crystal structure of the H2L1 ligand was determined by single crystal X-ray diffraction studies. The spectral data showed that the thiosemicarbazone behaves as an NNS tridentate ligand through the nitrogen atoms of the azomethine group and pyrazine ring and the sulphur atom of the thioamide group. Elemental and thermal analyses indicated that the obtained metal complexes had a 1 : 1 stoichiometry (metal-ligand). The interactions between these complexes and calf thymus DNA (CT-DNA) were studied by electronic absorption and viscosity measurements. The activities of these compounds against oxidative DNA cleavage were examined by agarose gel electrophoresis. Cu(II) and Ni(II) complexes can wind DNA strands through groove interactions and promote strand breakage of the plasmid pmCherry under oxidative stress conditions. Moreover, all the complexes could interact more strongly with DNA than could with the free ligands. Finally, the antibacterial activities of the ligands and their complexes were determined by in vitro tests against Gram-positive bacterial strains (S. aureus ATCC 25923, L. monocytogenes ATCC 19115, and B. cereus ATCC 10876) and Gram-negative bacterial strains (E. coli ATCC 25922, S. typhimurium ATCC 14028, and K. pneumoniae ATCC BAA-2146) using the broth microdilution method. The metal complexes showed greater antimicrobial activities than the precursor ligands against some of the microorganisms.
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4

Chan, Chung Ying, and Peter J. Barnard. "Rhenium complexes of bidentate, bis-bidentate and tridentate N-heterocyclic carbene ligands." Dalton Transactions 44, no. 44 (2015): 19126–40. http://dx.doi.org/10.1039/c5dt03295d.

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Rhenium(i) tricarbonyl complexes of a range of bidentate, bis-bidentate and tridentate NHC ligands have been prepared. These NHC ligands are of interest for possible applications in the development of Tc-99m or Re-186/188 radiopharmaceuticals and the stability of two complexes were evaluated in ligand challenge experiments using the metal binding amino acids l-histidine or l-cysteine.
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5

Jamil, Yasmin Mos'ad, Fathi Mohammed Al-Azab, and Nedhal Abdulmawla Al-Selwi. "Novel organophosphorus Schiff base ligands: Synthesis, characterization, ligational aspects, XRD and biological activity studies." Ecletica Quimica 48, no. 3 (July 1, 2023): 36–53. http://dx.doi.org/10.26850/1678-4618eqj.v48.3.2023.p36-53.

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Six complexes have been synthesized from Cu(II), Ni(II), and Co(II) with new bidentate N2 donor Schiff base ligand (2-methoxybenzalidene-1-phenylsemicarbazide L1) and tridentate N2O donor organophosphorus Schiff base ligand (2-methoxybenzalidenediphenylphosphate-1-phenylsemicarbazide L2). Both ligands were synthesized and characterized by metal analysis, infrared (IR), ultraviolet visible (UV-Vis), and nuclear magnetic resonance (NMR) spectral studies. The chemical structures of the synthesized complexes were characterized using their metal analysis, magnetic susceptibility, molar conductance, IR, and UV-Vis spectra. According to molar ratio studies, the complexes have the composition of ML2 for L1 and ML for L2. The X-ray diffraction (XRD) studies showed that the particle size of ligands and L1 complexes were in nano-range. The ligands and their metal complexes have been screened for their antioxidant, antibacterial and antifungal activity.
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6

Laramée-Milette, Baptiste, and Garry S. Hanan. "Ruthenium bistridentate complexes with non-symmetrical hexahydro-pyrimidopyrimidine ligands: a structural and theoretical investigation of their optical and electrochemical properties." Dalton Transactions 45, no. 31 (2016): 12507–17. http://dx.doi.org/10.1039/c6dt02408d.

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The optical and electronic properties of six Ru complexes with non-symmetrical tridentate ligands have been investigated and, as corroborated by electrochemical data, the presence of the hpp ligand strongly affects the oxidation potential of the metal ion.
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Kavitha, Palakuri, and K. Laxma Reddy. "Synthesis, Structural Characterization, and Biological Activity Studies of Ni(II) and Zn(II) Complexes." Bioinorganic Chemistry and Applications 2014 (2014): 1–13. http://dx.doi.org/10.1155/2014/568741.

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Ni(II) and Zn(II) complexes were synthesized from tridentate 3-formyl chromone Schiff bases such as 3-((2-hydroxyphenylimino)methyl)-4H-chromen-4-one (HL1), 2-((4-oxo-4H-chromen-3-yl)methylneamino)benzoic acid (HL2), 3-((3-hydroxypyridin-2-ylimino)methyl)-4H-chromen-4-one (HL3), and 3-((2-mercaptophenylimino)methyl)-4H-chromen-4-one (HL4). All the complexes were characterized in the light of elemental analysis, molar conductance, FTIR, UV-VIS, magnetic, thermal, powder XRD, and SEM studies. The conductance and spectroscopic data suggested that, the ligands act as neutral and monobasic tridentate ligands and form octahedral complexes with general formula [M(L1–4)2]·nH2O (M = Ni(II) and Zn(II)). Metal complexes exhibited pronounced activity against tested bacteria and fungi strains compared to the ligands. In addition metal complexes displayed good antioxidant and moderate nematicidal activities. The cytotoxicity of ligands and their metal complexes have been evaluated by MTT assay. The DNA cleavage activity of the metal complexes was performed using agarose gel electrophoresis in the presence and absence of oxidant H2O2. All metal complexes showed significant nuclease activity in the presence of H2O2.
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8

Peng, Deqian, Xinwen Yan, Chao Yu, Shaowen Zhang, and Xiaofang Li. "Transition metal complexes bearing tridentate ligands for precise olefin polymerization." Polymer Chemistry 7, no. 15 (2016): 2601–34. http://dx.doi.org/10.1039/c6py00040a.

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9

Aragón-Muriel, Alberto, Viviana Reyes-Márquez, Farrah Cañavera-Buelvas, Jesús R. Parra-Unda, Fernando Cuenú-Cabezas, Dorian Polo-Cerón, Raúl Colorado-Peralta, Galdina V. Suárez-Moreno, Bethsy Adriana Aguilar-Castillo, and David Morales-Morales. "Pincer Complexes Derived from Tridentate Schiff Bases for Their Use as Antimicrobial Metallopharmaceuticals." Inorganics 10, no. 9 (September 5, 2022): 134. http://dx.doi.org/10.3390/inorganics10090134.

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Within the current challenges in medicinal chemistry, the development of new and better therapeutic agents effective against infectious diseases produced by bacteria, fungi, viruses, and parasites stands out. With chemotherapy as one of the main strategies against these diseases focusing on the administration of organic and inorganic drugs, the latter is generally based on the synergistic effect produced by the formation of metal complexes with biologically active organic compounds. In this sense, Schiff bases (SBs) represent and ideal ligand scaffold since they have demonstrated a broad spectrum of antitumor, antiviral, antimicrobial, and anti-inflammatory activities, among others. In addition, SBs are synthesized in an easy manner from one-step condensation reactions, being thus suitable for facile structural modifications, having the imine group as a coordination point found in most of their metal complexes, and promoting chelation when other donor atoms are three, four, or five bonds apart. However, despite the wide variety of metal complexes found in the literature using this type of ligands, only a handful of them include on their structures tridentate SBs ligands and their biological evaluation has been explored. Hence, this review summarizes the most important antimicrobial activity results reported this far for pincer-type complexes (main group and d-block) derived from SBs tridentate ligands.
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Sumby, Christopher J., Ben A. Leita, Boujemaa Moubaraki, Keith S. Murray, and Peter J. Steel. "Synthesis and Coordination Chemistry of Doubly-Tridentate Tripodal Pyridazine and Pyrimidine-Derived Ligands: Structural Interplay Between M2L and M2L2 (M = Ni and Pd) Complexes and Magnetic Properties of Iron(II) Complexes." Australian Journal of Chemistry 62, no. 9 (2009): 1142. http://dx.doi.org/10.1071/ch09244.

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The coordination chemistry of three bridging doubly-tridentate ligands, including the known compound 3,6-bis(di-2-pyridylmethyl)pyridazine (1), which is structurally similar to 1,4-bis(di-2-pyridylmethyl)phthalazine (2), and two pyrimidine-linked compounds 4,6-bis(di-2-pyridylmethyl)pyrimidine (3), and 4,6-bis(di-2-pyridylamino)pyrimidine (4), was investigated with FeII, NiII, and PdII metal salts. Ligands 3 and 4 were synthesized in one-pot reactions from easily obtained starting materials; compound 3 was synthesized from di-2-pyridylmethane and 4,6-diiodopyrimidine in 48% yield, while ligand 4 was prepared by reacting di-2-pyridylamine with 4,6-dichloropyrimidine in 27% yield. During the synthesis of 4, an additional compound, 4-chloro-6-(di-2-pyridylamino)pyrimidine (5), with only one tridentate binding site was obtained in 30% yield. Reactions of 1, 3, and 4 with FeII or NiII salts gave two types of complexes, either discrete M2L or M2L2 assemblies. The PdII complexes obtained were also characterized as discrete M2L complexes. The compounds were characterized by a combination of NMR and IR spectroscopy, microanalysis and X-ray crystallography. Noticeable differences in the structures obtained for NiII coordination complexes with the carbon-linked (3) and nitrogen-linked (4) ligands were observed, whereby the nitrogen linker adopted a trigonal planar geometry and prevented tridentate facial coordination of the octahedral metal centres. The magnetic properties of dinuclear FeII complexes of 1 were examined to see if they showed spin-crossover effects, a feature recently observed by others in other dinuclear helicate complexes, but the complexes remained high-spin at all temperatures between 300 and 2 K.
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Дисертації з теми "Tridentate Ligands - Metal Complexes"

1

Harkup, Kathryn. "Studies in tridentate hemilabile ligands and their metal complexes." Thesis, University of Nottingham, 2004. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.406977.

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2

Chung, Simon S. M. "Transition metal complexes of new mixed donor tridentate ligands." Thesis, University of Nottingham, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.367415.

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3

Paine, Tapan Kanti. "Transition metal complexes of tridentate bisphenol ligands and their reactivity towards organic substrate." [S.l. : s.n.], 2002. http://deposit.ddb.de/cgi-bin/dokserv?idn=967431786.

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4

Nobbs, James. "Complexes Bearing Tridentate Heterocyclic Ligands in Transition Metal Catalysed Olefin and Diolefin Polymerisation." Thesis, Imperial College London, 2010. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.525226.

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5

Tam, Ka-ho. "Group 4 complexes bearing tridentate aryloxide-based ancillary ligands synthesis, characterization and application as olefin polymerization catalysts /." Click to view the E-thesis via HKUTO, 2006. http://sunzi.lib.hku.hk/hkuto/record/B36727222.

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Tam, Ka-ho, and 譚家豪. "Group 4 complexes bearing tridentate aryloxide-based ancillaryligands: synthesis, characterization andapplication as olefin polymerization catalysts." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2006. http://hub.hku.hk/bib/B36727222.

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Dankhoff, Katja [Verfasser], and Birgit [Akademischer Betreuer] Weber. "Transition metal complexes with tridentate ligands : a variety of properties / Katja Dankhoff ; Betreuer: Birgit Weber." Bayreuth : Universität Bayreuth, 2019. http://d-nb.info/1198308826/34.

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8

Liang, Lan-Chang 1967. "Early transition metal complexes containing tridentate amido ligands : a systematic approach to Ziegler-Natta catalysis." Thesis, Massachusetts Institute of Technology, 1999. http://hdl.handle.net/1721.1/85341.

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9

Williams, Dara Bridget. "Tridentate, dianionic ligands for alkane functionalization with platinum(II) and oxidation of iridium(III) hydrides with dioxygen /." Thesis, Connect to this title online; UW restricted, 2007. http://hdl.handle.net/1773/8545.

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10

Chow, Pui-keong, and 周沛強. "Luminescent palladium(II) and platinum(II) complexes with tridentate monoanionic and tetradentate dianionic cyclometallated ligands : structures, photophysical properties and material application." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2013. http://hdl.handle.net/10722/193416.

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Four structural isomers of platinum(II) complexes with C-deprotonated R-C^N^N-R’ cyclometallated ligands (R-C^N^N-R’ = -extended 6-aryl-2,2’-bipyridine derivatives containing 2-naphthyl, 3-isoquinolinyl, 1-isoquinolinyl or 2-quinolinyl moieties) have been synthesized with their photophysical properties investigated. The one bearing a 3-isoquinolinyl moiety shows the highest emission quantum yield among the four and hence has been extensively modified to give a series of complexes with different ancillary ligands (chloride, iodide, phenoxide, or acetylide). Most of these complexes show vibronic emission (max = 515–644 nm) with high emission quantum yield (up to unity) in degassed CH2Cl2; one of them has been used for OLED fabrication and shows a maximum EQE of 8.15 % with current efficiency of 25 cd A–1. The photocatalytic properties of these derivative complexes for oxidative tertiary amine functionalization have also been examined. Several highly robust and emissive platinum(II) complexes supported by two types of tetradentate O^N^C^N ligand systems (Φem up to 0.99; Td up to 520 ℃) have been synthesized and show different emission energies (λmax = 482–561 nm). Most of them exhibit excimeric emission in solution state at room temperature which are dependent on the modifications on the tetradentate O^N^C^N ligands. DFT/TDDFT calculations reveal that the metal complex showing the most intense excimeric emission possesses an excimeric excited state with a localized structure, which is unusual for these classes of platinum(II) complexes. Based on this finding, WOLED (ηL(max) = 71.0 cd/A, ηp(max) = 55.8 lm/W, ηExt = 16.5 %, CIE = 0.33, 0.42, CRI = 77) and WPLED (ηL(max) = 17.0 cd/A, ηp(max) = 9.1 lm/W, ηExt = 9.7 %, CIE = 0.43, 0.45, CRI = 78) based on this complex have been fabricated with high efficiency achieved. Palladium(II) complexes containing C-deprotonated R-C^N^N-R’ cyclometallated and pentafluorophenylacetylide ligands exhibit phosphorescence in both solid state and fluid solutions at room temperature with some of them exhibiting aggregation-induced emission (AIE). These complexes have been applied as photosensitizers in light-induced oxidative functionalization of secondary and tertiary benzylic amines as well as in light-induced hydrogen production, with a maximum of 175 turnovers for hydrogen produced. Palladium(II) complexes containing two types of tetradentate dianionic O^N^C^N ligand systems (Systems 1 and 2) have been prepared and show constrasting photophyical properties. A full scale time-resolved spectroscopic analysis has been done on some of these complexes and a platinum(II) analogue. These complexes are found to have similar excited state decay pathway( 〖S_1〗^i→〖S_1〗^f→T) with ΦISC of about unity. The emission efficiency of System 2 complexes is superior to that of System 1 complexes, which is ascribed to the suppression of excited state distortion on the basis of the results of DFT calculations. A lower radiative decay rate of System 2 palladium(II) complexes relative to the platinum(II) analogue has been found, which could be due to their lower spin-orbit coupling constant. One of the palladium(II) complexes has been applied in vacuum-deposited OLEDs with maximum current density, power efficiency and EQE of 20.0 cd A^(-1), 13.6 lm W^(-1) and 7.4 % respectively. In addition, applications of these palladium(II) complexes as photosensitizers for oxidation of secondary amines have been examined.
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Chemistry
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Книги з теми "Tridentate Ligands - Metal Complexes"

1

1935-, Buchler J. W., and Dolphin David, eds. Metal complexes with tetrapyrrole ligands. Berlin: Springer-Verlag, 1987.

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2

Buchler, Johann Walter, ed. Metal Complexes with Tetrapyrrole Ligands I. Berlin, Heidelberg: Springer Berlin Heidelberg, 1987. http://dx.doi.org/10.1007/bfb0036788.

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3

Buchler, J. W., ed. Metal Complexes with Tetrapyrrole Ligands II. Berlin, Heidelberg: Springer Berlin Heidelberg, 1991. http://dx.doi.org/10.1007/3-540-52899-7.

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4

W, Buchler J., ed. Metal complexes with tetrapyrrole ligands II. Berlin: Springer-Verlag, 1991.

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5

W, Buchler J., ed. Metal complexes with Tetrapyrrole Ligands III. Berlin: Springer, 1995.

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6

Chauvin, Remi, and Yves Canac, eds. Transition Metal Complexes of Neutral eta1-Carbon Ligands. Berlin, Heidelberg: Springer Berlin Heidelberg, 2010. http://dx.doi.org/10.1007/978-3-642-04722-0.

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7

Lane, H. P. Transition metal complexes of group fifteen donor ligands. Manchester: UMIST, 1994.

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8

Hawkins, Ian Michael. New transition metal complexes containing phosphine and sulphur ligands. Norwich: University of East Anglia, 1988.

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9

Kawaguchi, Shinichi. Variety in Coordination Modes of Ligands in Metal Complexes. Berlin, Heidelberg: Springer Berlin Heidelberg, 1988. http://dx.doi.org/10.1007/978-3-642-50148-7.

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Kawaguchi, Shinʼichi. Variety in coordination modes of ligands in metal complexes. Berlin: Springer-Verlag, 1988.

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Частини книг з теми "Tridentate Ligands - Metal Complexes"

1

Martell, Arthur E., and Robert D. Hancock. "Chelating Ligands." In Metal Complexes in Aqueous Solutions, 63–95. Boston, MA: Springer US, 1996. http://dx.doi.org/10.1007/978-1-4899-1486-6_3.

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2

Chow, S. T., and C. A. Mcauliffe. "Transition Metal Complexes Containing Tridentate Amino Acids." In Progress in Inorganic Chemistry, 51–103. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2007. http://dx.doi.org/10.1002/9780470166208.ch2.

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3

Guerchais, Véronique, and Hubert Le Bozec. "Metal Complexes Featuring Photochromic Ligands." In Topics in Organometallic Chemistry, 171–225. Berlin, Heidelberg: Springer Berlin Heidelberg, 2009. http://dx.doi.org/10.1007/978-3-642-01866-4_6.

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4

Dzhardimalieva, Gulzhian I., and Igor E. Uflyand. "Metal Complexes with Polymer Chelating Ligands." In Chemistry of Polymeric Metal Chelates, 199–366. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-56024-3_3.

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5

Liu, Chen-Wei, and J. Derek Woollins. "Metal Complexes Containing P-Se Ligands." In Selenium and Tellurium Chemistry, 303–20. Berlin, Heidelberg: Springer Berlin Heidelberg, 2011. http://dx.doi.org/10.1007/978-3-642-20699-3_13.

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Yamada, Jun-ichi, and Toyonari Sugimoto. "TTFs as Ligands of Metal Complexes." In TTF Chemistry, 155–73. Berlin, Heidelberg: Springer Berlin Heidelberg, 2004. http://dx.doi.org/10.1007/978-3-662-10630-3_7.

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Cotton, F. A., and C. M. Lukehart. "Transition Metal Complexes Containing Carbenoid Ligands." In Progress in Inorganic Chemistry, 487–613. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2007. http://dx.doi.org/10.1002/9780470166178.ch3.

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8

McGuinness, David S. "Cr Complexes of Nitrogen Donor Ligands for Olefin Oligomerisation and Polymerisation." In Catalysis by Metal Complexes, 1–26. Dordrecht: Springer Netherlands, 2011. http://dx.doi.org/10.1007/978-90-481-3815-9_1.

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Mayr, A. "The Role of Nucleophiles and Electrophiles in Coupling Reactions of Alkylidyne Ligands." In Transition Metal Carbyne Complexes, 219–30. Dordrecht: Springer Netherlands, 1993. http://dx.doi.org/10.1007/978-94-011-1666-4_25.

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Lungwitz, B., and A. C. Filippou. "Electron-Rich Tungsten Aminocarbyne Complexes with Cp* Ligands Synthesis and Protonation Reactions." In Transition Metal Carbyne Complexes, 249–54. Dordrecht: Springer Netherlands, 1993. http://dx.doi.org/10.1007/978-94-011-1666-4_28.

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Тези доповідей конференцій з теми "Tridentate Ligands - Metal Complexes"

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Janabi, Basma Al, Jose Manuel Vila, and Juan M. Ortigueira. "Palladacycles as Functionalized Metal-Ligand Precursors, Contain Tridentate [Csp2, N, S] Ligands." In ECSOC-25. Basel Switzerland: MDPI, 2021. http://dx.doi.org/10.3390/ecsoc-25-11663.

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"The Investigation of Synthesis, Spectroscopic and Thermal Characterization of Cu(II) Complexes of Some Tridentate Ligands." In International Conference on Chemical, Environment & Biological Sciences. International Institute of Chemical, Biological & Environmental Engineering, 2014. http://dx.doi.org/10.15242/iicbe.c914063.

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Vlasenko, Valery G., Igor S. Vasilchenko, Irina V. Pirog, Tatiana E. Shestakova, Ali I. Uraev, Anatolii S. Burlov, and Alexander D. Garnovskii. "XAFS Study of the Ferro- and Antiferromagnetic Binuclear Copper(II) Complexes of Azomethine Based Tridentate Ligands." In X-RAY ABSORPTION FINE STRUCTURE - XAFS13: 13th International Conference. AIP, 2007. http://dx.doi.org/10.1063/1.2644524.

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Palopoli, Stephen F., and Thomas B. Brill. "Synthesis And Thermolysis Of Metal Complexes Containing Energetic Ligands." In 1988 Los Angeles Symposium--O-E/LASE '88, edited by Joseph Flanagan. SPIE, 1988. http://dx.doi.org/10.1117/12.943744.

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Ayadi, A., K. El Korchi, D. Guichaoua, S. Taboukhat, and A. El-Ghayoury. "Azo-Based Ligands and Metal Complexes for NLO Applications." In 2019 21st International Conference on Transparent Optical Networks (ICTON). IEEE, 2019. http://dx.doi.org/10.1109/icton.2019.8840333.

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Xu, Chao, Yu Du, Tingting Liu, and Suliang Yang. "Extraction of Nd(III), Eu(III), Am(III) and Cm(III) With 6-Carboxylic Di(2-Ethylhexyl) Amide Pyridine." In 2022 29th International Conference on Nuclear Engineering. American Society of Mechanical Engineers, 2022. http://dx.doi.org/10.1115/icone29-90818.

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Abstract Solvent extraction has been widely used in spent fuel reprocessing because of its advantages such as high mass transfer rate, short production cycle, easy operation and large extraction capacity. The ligands containing soft S and N atoms usually have a good effect on the separation of trivalent lanthanides actinides. Herein, a novel extractant, 6-carboxylic di(2-ethylhexyl) amide pyridine (DEHAPA, HA), containing carboxyl and amide pyridine, was designed. The extraction of Nd(III), Eu(III), Am(III) and Cm(III), representing trivalent lanthanides and actinides, from nitric solution has been carried out by DEHAPA diluted in toluene as the organic phase. According to the slope analysis, the results show that the extraction of Ln(III) and An(III) with DEHAPA was governed by ion-exchange mechanism and the extraction equilibrium constants of Nd(III), Eu(III), Am(III) and Cm(III) have been calculated. The effect of concentration indicated that the structure of extraction complexes are 1:3/LnA3 and 1:3/AnA3. The temperature has a slight influence to distribution ratio of extraction Nd(III) and Eu(III). The infrared spectrum of DEHAPA and extracted complex analysis showed that -N-C = O and -O-C = O group coordinated with Nd(III). According to 1:3/LnA3 extracted complex structure, the Nd(III) ion in complex was coordinated with three -N-C = O, -O-C = O and pyridine group from three tridentate A− ligands by three tridentate A− ligand in organic solvent. This work reveals the unique extraction and coordination structure and provides a value reference to design more effective extraction ligands for Ln(III)/An(III) separation.
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Sahraoui, Bouchta, Konstantinos Iliopoulos, and Abdelkrim El-Ghayoury. "NLO investigations of electroactive ligands and of their electroactive metal complexes." In 2013 15th International Conference on Transparent Optical Networks (ICTON). IEEE, 2013. http://dx.doi.org/10.1109/icton.2013.6602961.

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Gale, David C., Gary M. Gray, and Christopher M. Lawson. "Nonlinear optical properties of metal-organic complexes with phosphorous-donor ligands." In Optical Science, Engineering and Instrumentation '97, edited by Christopher M. Lawson. SPIE, 1997. http://dx.doi.org/10.1117/12.284168.

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Shchegolkov, Evgeny V., Irina V. Shchur, Yanina V. Burgart, and Victor I. Saloutin. "Polyfluorosalicylic acids as ligands for the creation of bioactive metal complexes." In ACTUAL PROBLEMS OF ORGANIC CHEMISTRY AND BIOTECHNOLOGY (OCBT2020): Proceedings of the International Scientific Conference. AIP Publishing, 2022. http://dx.doi.org/10.1063/5.0069222.

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Petrović, Biljana. "TRANSITION METAL ION COMPLEXES AS POTENTIAL ANTITUMOR AGENTS." In 1st INTERNATIONAL Conference on Chemo and BioInformatics. Institute for Information Technologies, University of Kragujevac,, 2021. http://dx.doi.org/10.46793/iccbi21.009p.

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Discovery of the antitumor activity of platinum complex, cisplatin, cis-Pt(NH3)2Cl2, and later carboplatin and oxaliplatin, led to the intensive investigation of the potential antitumor activity of the huge number of platinum complexes. Furthermore, it is well-known that platinum complexes express toxicity, numerous side effects and resistance, so the scientists make a lot of efforts to synthetize, beside Pt(II) and Pt(IV), other non-platinum compounds with potential antitumor activity, such as Pd(II), Ru(II/III) and Au(III) complexes. The goal of this study is to summarize the results of the investigation of the interactions between some mononuclear, homo- and hetero-polynuclear Pt(II), Pd(II), Ru(II/III) and Au(III) complexes with different sulfur- and nitrogen-donor biologically relevant nucleophiles. Among mononuclear complexes, the compounds with aromatic terpy (tepyridine) or bpma (bis-(2- pyridylmethyl)amine) and aliphatic dien (diethylentriamine) nitrogen-containing inert ligands were studied. Different homo- and hetero-polynuclear complexes with pz (pyrazine) or 4,4’-bipy (4,4’- bipyridine) as bridging and mostly en (ethylenediamine), bipy (2,2’-bipyridine) and dach (trans-1,2- diaminocyclohexane) as inert ligands were studied as well. The research was focused on the connection between the structure and the mechanisms of interactions with different biomolecules, such as L- cysteine (L-Cys), L-methionine (L-Met), tripeptide glutathione (GSH), guanosine-5’-monophosphate (5’-GMP), DNA and bovine serum albumin (BSA). Some of these complexes were selected for in vitro studies of the cytotoxicity on different tumor cell lines. Observed results contribute a lot as a guidance for the future design and determination of the structure-activity relationship (SAR) of different transition metal ion complexes.
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Звіти організацій з теми "Tridentate Ligands - Metal Complexes"

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Rakowski-DuBois, Mary C. Aspects of C-H Activation in Metal Complexes Containing Sulfur Ligands. Office of Scientific and Technical Information (OSTI), October 2004. http://dx.doi.org/10.2172/833244.

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Reynolds, Michael. Transition Metal Complexes of Cr, Mo, W and Mn Containing η1(S)-2,5-Dimethylthiophene, Benzothiophene and Dibenzothiophene Ligands. Office of Scientific and Technical Information (OSTI), вересень 2000. http://dx.doi.org/10.2172/764616.

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Kubas, G. J., J. Eckert, and X. L. Luo. Binding of hydrocarbons and other extremely weak ligands to transition metal complexes that coordinate hydrogen: Investigation of cis-interactions and delocalized bonding involving sigma bonds. Office of Scientific and Technical Information (OSTI), July 1997. http://dx.doi.org/10.2172/505275.

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