Relevant bibliographies by topics / P-N ligands

Academic literature on the topic 'P-N ligands'

Author: Grafiati
Published: 4 June 2021
Last updated: 25 May 2024

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

Select a source type:

Contents

Consult the lists of relevant articles, books, theses, conference reports, and other scholarly sources on the topic 'P-N ligands.'

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.

Journal articles on the topic "P-N ligands"

1

Meyer, Marco, Fabian Brunner, Alessandro Prescimone, Edwin C. Constable, and Catherine E. Housecroft. "Chimera Diimine Ligands in Emissive [Cu(P^P)(N^N)][PF6] Complexes." Inorganics 8, no. 5 (May 12, 2020): 33. http://dx.doi.org/10.3390/inorganics8050033.

Full text
Abstract:
The syntheses and characterizations of the chelating ligand 6-chloro-6′-methyl-2,2′-bipyridine (6-Cl-6′-Mebpy) and of the copper(I) compounds [Cu(POP)(6-Cl-6′-Mebpy)][PF6] and [Cu(xantphos)(6-Cl-6′-Mebpy)][PF6] (POP = bis(2-(diphenylphosphanyl)phenyl)ether and xantphos = 4,5-bis(diphenylphosphanyl)-9,9-dimethyl-9H-xanthene) are described. The single crystal structures of both complexes were determined; the copper(I) ion is in a distorted tetrahedral environment and in [Cu(xantphos)(6-Cl-6′-Mebpy)][PF6], the disorder of the 6-Cl-6′-Mebpy ligand indicates there is no preference of the ‘bowl’-like cavity of the xanthene unit to host either the methyl or chloro-substituent, consistent with comparable steric effects of the two groups. The electrochemical and photophysical properties of [Cu(POP)(6-Cl-6′-Mebpy)][PF6] and [Cu(xantphos)(6-Cl-6′-Mebpy)][PF6] were investigated and are compared with those of the related compounds containing 6,6′-dichloro-2,2′-bipyridine or 6,6′-dimethyl-2,2′-bipyridine ligands. Trends in properties of the [Cu(P^P)(N^N)]+ complexes were consistent with 6-Cl-6′-Mebpy behaving as a combination of the two parent ligands.
APA, Harvard, Vancouver, ISO, and other styles
2

Munzeiwa, Wisdom A., Bernard Omondi, and Vincent O. Nyamori. "Architecture and synthesis of P,N-heterocyclic phosphine ligands." Beilstein Journal of Organic Chemistry 16 (March 12, 2020): 362–83. http://dx.doi.org/10.3762/bjoc.16.35.

Full text
Abstract:
Diverse P,N-phosphine ligands reported to date have performed exceptionally well as auxiliary ligands in organometallic catalysis. Phosphines bearing 2-pyridyl moieties prominently feature in literature as compared to phosphines with five-membered N-heterocycles. This discussion seeks to paint a broad picture and consolidate different synthetic protocols and techniques for N-heterocyclic phosphine motifs. The introduction provides an account of P,N-phosphine ligands, and their structural and coordination benefits from combining heteroatoms with different basicity in one ligand. The body discusses the synthetic protocols which focus on P–C, P–N-bond formation, substrate and nucleophile types and different N-heterocycle construction strategies. Selected references are given in relation to the applications of the ligands.
APA, Harvard, Vancouver, ISO, and other styles
3

Takahashi, Shintaro, Kazuki Nakaya, Akihiko Ishii, and Norio Nakata. "[N,N′-Di-tert-butyl-P,P-diphenylphosphinimidic Amidato-κN,κN′]chlorosilicon-κSi-tetracarbonyliron." Molbank 2022, no. 3 (August 25, 2022): M1433. http://dx.doi.org/10.3390/m1433.

Full text
Abstract:
The title complex {[Ph2P(tBuN)2](Cl)Si:->Fe(CO)4} (2) was synthesized via the reaction of chlorosilylene [Ph2P(tBuN)2]SiCl (1), supported by an iminophosphonamide ligand with Fe(CO)5 in THF. The molecular structure of 2 was fully characterized by NMR (1H, 13C, 29Si, and 31P) and IR spectroscopies, as well as single-crystal X-ray diffraction (SCXRD) analysis. In the SCXRD analysis of 2, the silylene ligand was located in the axial positions of the coordination sphere of the central iron atom and other sites were occupied by carbonyl ligands.
APA, Harvard, Vancouver, ISO, and other styles
4

Rozanov, I. A., D. A. Murashov, L. Ya Medvedeva, V. I. Moiseev, and L. L. Maduskina. "New P,N-Cyclic Ligands." Phosphorus, Sulfur, and Silicon and the Related Elements 51, no. 1-4 (September 1990): 472. http://dx.doi.org/10.1080/10426509008040996.

Full text
APA, Harvard, Vancouver, ISO, and other styles
5

Nohara, Isaak, Alessandro Prescimone, Catherine Housecroft, and Edwin Constable. "Softening the Donor-Set: From [Cu(P^P)(N^N)][PF6] to [Cu(P^P)(N^S)][PF6]." Inorganics 7, no. 1 (January 18, 2019): 11. http://dx.doi.org/10.3390/inorganics7010011.

Full text
Abstract:
We report the synthesis and characterization of [Cu(P^P)(N^S)][PF6] complexes with P^P = bis(2-(diphenylphosphino)phenyl) ether (POP) or 4,5-bis(diphenylphosphino)-9,9- dimethylxanthene (xantphos) and N^S = 2-(iso-propylthio)pyridine (iPrSpy) or 2-(tert-butylthio)pyridine (tBuSpy). The single crystal structures of [Cu(POP)(iPrSPy)][PF6] and [Cu(POP)(tBuSPy)][PF6] have been determined and confirm a distorted tetrahedral copper(I) centre and chelating P^P and N^S ligands in each complex. Variable temperature (VT) 1H and 31P{1H} NMR spectroscopy reveals dynamic behavior with motion of the POP backbone in [Cu(POP)(iPrSPy)][PF6] and [Cu(POP)(tBuSPy)][PF6] frozen out at 238 K. VT NMR spectroscopic data including EXSY peaks in the ROESY spectrum of [Cu(xantphos)(tBuSPy)][PF6] at 198 K reveal that two conformers exist in an approximate ratio of 5:1. Replacing bpy by the N^S ligands shifts the Cu+/Cu2+ oxidation to a higher potential. The copper(I) compounds are weak emitters in the solid state with PLQY values of <2%. These values are similar to those for [Cu(POP)(bpy)][PF6] and [Cu(xantphos)(bpy)][PF6] in the solid state.
APA, Harvard, Vancouver, ISO, and other styles
6

Carroll, Michael P., and Patrick J. Guiry. "P,N ligands in asymmetric catalysis." Chem. Soc. Rev. 43, no. 3 (2014): 819–33. http://dx.doi.org/10.1039/c3cs60302d.

Full text
APA, Harvard, Vancouver, ISO, and other styles
7

Roesky, Peter W. "P?N ligands in lanthanide chemistry." Heteroatom Chemistry 13, no. 6 (2002): 514–20. http://dx.doi.org/10.1002/hc.10096.

Full text
APA, Harvard, Vancouver, ISO, and other styles
8

Zhu, Ying-Gui, and Feng Gao. "catena-Poly[[diiodidomercury(II)]-μ-N,N′-p-phenylenebis(pyridine-3-carboxamide)-κ2 N:N′]." Acta Crystallographica Section E Structure Reports Online 63, no. 3 (February 16, 2007): m778—m779. http://dx.doi.org/10.1107/s160053680700709x.

Full text
Abstract:
Crystals of the title compound, [HgI2(C18H14N4O2)] n , were obtained by the reaction of HgI2 and p-phenylene-bis(pyridine-3-carboxamide) in DMF. The asymmetric unit is composed of only half of the formula unit; the mercury atom lies on a crystallographic twofold rotation axis, and there is an inversion centre at the centre of the benzene ring. Each HgII atom is coordinated by two I atoms and two N atoms from two p-phenylene-bis(pyridine-3-carboxamide) (bpfb) ligands, in a distorted tetrahetral geometry. Bpfb acts as a bifunctional bridging ligand, linking HgII atoms into a one-dimensional chain. Hydrogen-bonding interactions between the O atom and the H atoms of bpfb ligands result in a two-dimensional supramolecular network.
APA, Harvard, Vancouver, ISO, and other styles
9

Klein, Marius, Nemrud Demirel, Alexander Schinabeck, Hartmut Yersin, and Jörg Sundermeyer. "Cu(I) Complexes of Multidentate N,C,N- and P,C,P-Carbodiphosphorane Ligands and Their Photoluminescence." Molecules 25, no. 17 (September 1, 2020): 3990. http://dx.doi.org/10.3390/molecules25173990.

Full text
Abstract:
A series of dinuclear copper(I) N,C,N- and P,C,P-carbodiphosphorane (CDP) complexes using multidentate ligands CDP(Py)2 (1) and (CDP(CH2PPh2)2 (13) have been isolated and characterized. Detailed structural information was gained by single-crystal XRD analyses of nine representative examples. The common structural motive is the central double ylidic carbon atom with its characteristic two lone pairs involved in the binding of two geminal L-Cu(I) fragments at Cu–Cu distances in the range 2.55–2.67 Å. In order to enhance conformational rigidity within the characteristic Cu–C–Cu triangle, two types of chelating side arms were symmetrically attached to each phosphorus atom: two 2-pyridyl functions in ligand CDP(Py)2 (1) and its dinuclear copper complexes 2–9 and 11, as well as two diphenylphosphinomethylene functions in ligand CDP(CH2PPh2)2 (13) and its di- and mononuclear complexes 14–18. Neutral complexes were typically obtained via the reaction of 1 with Cu(I) species CuCl, CuI, and CuSPh or via the salt elimination reaction of [(CuCl)2(CDP(Py)2] (2) with sodium carbazolate. Cationic Cu(I) complexes were prepared upon treating 1 with two equivalents of [Cu(NCMe)4]PF6, followed by the addition of either two equivalents of an aryl phosphine (PPh3, P(C6H4OMe)3) or one equivalent of bisphosphine ligands bis[(2-diphenylphosphino)phenyl] ether (DPEPhos), 4,5-bis(diphenylphosphino)-9,9-dimethylxanthene (XantPhos), or 1,1′-bis(diphenyl-phosphino) ferrocene (dppf). For the first time, carbodiphosphorane CDP(CH2PPh2)2 (13) could be isolated upon treating its precursor [CH(dppm)2]Cl (12) with NaNH2 in liquid NH3. A protonated and a deprotonated derivative of ligand 13 were prepared, and their coordination was compared to neutral CDP ligand 13. NMR analysis and DFT calculations reveal that the most stable tautomer of 13 does not show a CDP (or carbone) structure in its uncoordinated base form. For most of the prepared complexes, photoluminescence upon irradiation with UV light at room temperature was observed. Quantum yields (ΦPL) were determined to be 36% for dicationic [(CuPPh3)2(CDP(Py)2)](PF6)2 (4) and 60% for neutral [(CuSPh)2(CDP(CH2PPh2)2] (16).
APA, Harvard, Vancouver, ISO, and other styles
10

Lagaditis, Paraskevi O., Alexandre A. Mikhailine, Alan J. Lough, and Robert H. Morris. "Template Synthesis of Iron(II) Complexes Containing Tridentate P−N−S, P−N−P, P−N−N, and Tetradentate P−N−N−P Ligands." Inorganic Chemistry 49, no. 3 (February 2010): 1094–102. http://dx.doi.org/10.1021/ic901945c.

Full text
APA, Harvard, Vancouver, ISO, and other styles
More sources

Dissertations / Theses on the topic "P-N ligands"

1

Pop, Lucian-Cristian. "Pnictogénium cations (P, As, Sb) et germylènes à ligands N,N’ et N,O-chélatants : synthèse, étude structurale et réactivité." Toulouse 3, 2010. http://thesesups.ups-tlse.fr/1517/.

Full text
Abstract:
Ce travail concerne la stabilisation d'espèces à basse coordinence du groupe 15 (P, As et Sb) et du germanium par des substituents N,N' et N,O chélatants comportant un système pi-conjugué comme les aminotroponiminate et aminotroponate. Le premier chapitre porte sur la mise au point des voies de synthèse de composés dichlorés ou de chloropnictogénium cations. L'étude par RMN multinoyaux (1H, 13C et 31P) des pnictogénium cations a montré une bonne délocalisation de la charge positive sur le cycle insaturé à 7 chaînons ce qui a été confirmé par l'étude de leur structure par diffraction des rayons X et des calculs DFT. Dans le deuxième chapitre, nous avons réalisé des réactions caractéristiques comme des réactions d'oxydation. Les phosphénium cations conduisent très facilement aux composés hydroxylés correspondants. Une réaction inattendue d'élimination de HCl a conduit à des dioxo- et thiooxo-phosphoranes qui constituent les premiers exemples d'aminométa phosphonate (et de son équivalent soufré) stabilisés par complexation intramoléculaire. Les réactions de cycloaddition avec une o-quinone ont également permis d'accéder à de nouveaux cycloadduits. La dernière partie de ce chapitre porte sur l'aptitude de ces phosphéniums cations à former des complexes avec les métaux de transition. Nous avons pu ainsi isoler le premier hydroxyphosphénium stabilisé par complexation avec le tungstène. Dans le troisième chapitre, nous avons développé l'étude de nouveaux systèmes chélatants: les di-amonitroponimines et di-aminotropones pontées. Nous avons ensuite réalisée une extension de ces réactions au germanium et pu ainsi accéder à de nouveaux bis-germylènes. Ces espèces bien que tri-coordinnées conservent leur caractère divalent comme le montrent leurs réactions de cycloaddition avec une o-quinone. Enfin, un bis-germylène complexé par le tungstène a pu être isolé et sa structure déterminée par diffraction des rayons X
This thesis entitled "N,N'- and N,O-chelated pnictogenium cations (P, As, Sb) and germylenes: syntheses, structural studies and reactivity" is structured in three chapters. In the first chapter an easy and direct route to the first phosphenium and arsenium cations supported by N,N' or N,O-chelation derived from a tropolone scaffold was presented. These new compounds were fully characterized by various spectroscopic methods, X-ray analyses and DFT calculations. The expected Lewis amphoterism which is illustrated on the one hand, by the high-lying phosphorus lone-pair orbital (HOMO-1), and on the other hand, by the delocalized positive charge opens up new perspectives for the involvement of these ambiphilic species as valuable ligands for new catalysts. The second chapter concerns the reactivity of these new pnictogenium cations. A variety of reactions including oxidation (with dimethylsulfoxide, sulfur or selenium), cycloaddition and halide ion extraction were studied. The first example of an aminometaphosphonate (and its sulfur equivalent) stabilized by intramolecular complexation was reported. For the first time, a hydroxyphosphenium cation stabilized by complexation with pentacarbonyltungsten was prepared and its structure elucidated by X-ray single-crystal diffraction study. The last chapter refers to the synthesis and characterization of bridged bis(pnictogenium) cations with an extension to divalent germanium compounds. Among the most noteworthy result is the stable bis-germylene pentacarbonyl tungsten complex
APA, Harvard, Vancouver, ISO, and other styles
2

Irele, Patricia Taiwo. "Some chemistry of triosmium clusters with P- and N- ligands." Thesis, University of Cambridge, 1987. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.254120.

Full text
APA, Harvard, Vancouver, ISO, and other styles
3

Sauthier, Mathieu. "1,2-diiminophosphoranes et 2-'2-pyridyl)phospholes : : nouveaux ligands N,N et P,N pour la catalyse homogène." Rennes 1, 2001. http://www.theses.fr/2001REN10040.

Full text
Abstract:
Nous décrivons la synthèse de nouveaux ligands N,N chiraux : les 1,2-diiminophosphoranes. La chimie de coordination de ces ligands dépend de la nature du squelette carboné. Leur utilisation pour la réaction de substitution allylique catalysée par le palladium a permis d'obtenir de bons excès énantiomériques. Ils ont été utilisés pour la préparation de complexes de nickel qui s'avèrent être des catalyseurs très actifs pour la réaction d'oligomérisation de l'éthylène. Nous avons également préparé de nouveaux ligands mixte P,N : les 2-(2-pyridyl)phospholes. Ces composés se comportent comme des chélates vis à vis du palladium et du ruthénium. Les complexes cationiques du palladium sont actifs pour la copolymérisation éthylène-monoxyde de carbone. Les 2,5-di(2-pyridyl)phospholes possèdent une chimie de coordination très originale et conduisent à la formation de systèmes bimétalliques possédant une phosphine pontante symétrique.
APA, Harvard, Vancouver, ISO, and other styles
4

Deng, Shining. "Synthesis of supramolecular architectures using P n -ligands as building blocks." kostenfrei, 2007. http://www.opus-bayern.de/uni-regensburg/volltexte/2008/809/.

Full text
APA, Harvard, Vancouver, ISO, and other styles
5

Watson, Alexander. "Avoiding Resolution : Approaches to New P,N Ligands for Asymmetric Catalysis." Thesis, University of Oxford, 2009. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.504647.

Full text
APA, Harvard, Vancouver, ISO, and other styles
6

Kelly, Robert David. "Platinum (II) sila-alkyl complexes with N- and P-donor ligands." Thesis, Imperial College London, 1989. http://hdl.handle.net/10044/1/47499.

Full text
APA, Harvard, Vancouver, ISO, and other styles
7

Ly, Tuan Q. "New heteroatom ligands and metalla-heterocycles via P-N bond formation." Thesis, Loughborough University, 1997. https://dspace.lboro.ac.uk/2134/32271.

Full text
Abstract:
The reaction of K[N{P(S)Ph2}2] (R = Ph or iPr) with [Mo(N3S2)Cl3] in dichloromethane gives [Mo(N3S2){(ph2(O)PNP(S)P2}2] 1 and [Mo(N3S2){iPr2(O)PNP(S)iPr2}2] 2. X-ray crystallography revealed in both compounds the chelates are co-ordinated to octahedral metal centres. The oxygen atoms are located in the trans position to the nitrogen of the triazene ring. The absence of a chloride counter ion indicates that the metal centre has been reduced from Mo(VI) to Mo(V), and electron paramagnetic resonance spectroscopy confIrmed the reduction of the molybdenum centres. The friction reducing study of compound 1 and [Mo(N3S2)(DTBC)2]Na (DTBC = 3,5–di–tert–butylcatechol) has shown that both compounds exhibit low friction coefficient values.
APA, Harvard, Vancouver, ISO, and other styles
8

Manzi, Lucia. "Preparation and characterisation of rhodium complexes with potentially bidentate P-N and P-O ligands." Thesis, University of Liverpool, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.366951.

Full text
APA, Harvard, Vancouver, ISO, and other styles
9

Cayir, Merve [Verfasser], and Werner R. [Akademischer Betreuer] Thiel. "New N,N,P-Ligands and Their Heterobimetallic Complexes / Merve Cayir. Betreuer: Werner R. Thiel." Kaiserslautern : Technische Universität Kaiserslautern, 2015. http://d-nb.info/1070218774/34.

Full text
APA, Harvard, Vancouver, ISO, and other styles
10

Swarts, Andrew John. "Novel transition metal complexes based on N,N and N,P ligands as catalysts for ethylene transformation reactions." Thesis, Stellenbosch : Stellenbosch University, 2014. http://hdl.handle.net/10019.1/86330.

Full text
APA, Harvard, Vancouver, ISO, and other styles
More sources

Books on the topic "P-N ligands"

1

Sutaria, Adil Dinyar. The effect of heterodentate chelatin P-N ligands on allyl and alkyl complexes of palladium and platinum. Salford: University of Salford, 1995.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
2

Shiel, Steven William. Towards the synthesis of mixed P/N-donor ligands based on the [{[eta][superior]6-(arene)}Cr(CO)[inferior]3] unit. Birmingham: University of Birmingham, 1995.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
3

Dalili, Shadi. Synthesis of aziridine-derived P,N ligands for asymmetric catalysis. 2002.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
4

Ly, Tuan Q. New heteroatom ligands and metalla-heterocycles via P-N bond formation. 1997.

Find full text
APA, Harvard, Vancouver, ISO, and other styles

Book chapters on the topic "P-N ligands"

1

Zhou, Yong Gui, and Xue Long Hou. "1,2-P,N-Bidentate Ferrocenyl Ligands." In Chiral Ferrocenes in Asymmetric Catalysis, 97–147. Weinheim, Germany: Wiley-VCH Verlag GmbH & Co. KGaA, 2010. http://dx.doi.org/10.1002/9783527628841.ch5.

Full text
APA, Harvard, Vancouver, ISO, and other styles
2

Zhang, Shuanming, Roberto Pattacini, and Pierre Braunstein. "Coordination Chemistry of Oxazoline/Thiazoline-Based P,N Ligands." In Advances in Organometallic Chemistry and Catalysis, 185–98. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2013. http://dx.doi.org/10.1002/9781118742952.ch14.

Full text
APA, Harvard, Vancouver, ISO, and other styles
3

Bayston, Daniel J., and Mario E. C. Polywka. "Catalytic Hydrogenation, Hydroformylation and Hydrosilylation with Immobilized P- and N-ligands." In Chiral Catalyst Immobilization and Recycling, 211–34. Weinheim, Germany: Wiley-VCH Verlag GmbH, 2007. http://dx.doi.org/10.1002/9783527613144.ch09.

Full text
APA, Harvard, Vancouver, ISO, and other styles
4

Woodmansee, David H., and Andreas Pfaltz. "Iridium-Catalyzed Asymmetric Hydrogenation of Olefins with Chiral N,P and C,N Ligands." In Iridium Catalysis, 31–76. Berlin, Heidelberg: Springer Berlin Heidelberg, 2010. http://dx.doi.org/10.1007/978-3-642-15334-1_3.

Full text
APA, Harvard, Vancouver, ISO, and other styles
5

Pardasani, R. T., and P. Pardasani. "Magnetic properties of mixed ligand coper(II) complex with p-nitrobenzoic acid and pyridine-N-oxide." In Magnetic Properties of Paramagnetic Compounds, Magnetic Susceptibility Data, Volume 6, 1027–29. Berlin, Heidelberg: Springer Berlin Heidelberg, 2022. http://dx.doi.org/10.1007/978-3-662-65056-1_368.

Full text
APA, Harvard, Vancouver, ISO, and other styles
6

Pardasani, R. T., and P. Pardasani. "Magnetic properties of polymeric mixed ligand manganese(II) complex with p-nitrobenzoic acid and pyridine-N-oxide." In Magnetic Properties of Paramagnetic Compounds, Magnetic Susceptibility Data, Volume 6, 190–92. Berlin, Heidelberg: Springer Berlin Heidelberg, 2022. http://dx.doi.org/10.1007/978-3-662-65056-1_70.

Full text
APA, Harvard, Vancouver, ISO, and other styles
7

Rybtchinski, Boris, and David Milstein. "C—C versus C—H Bond Oxidative Addition in PCX (X=P,N,O) Ligand Systems: Facility, Mechanism, and Control." In ACS Symposium Series, 70–85. Washington, DC: American Chemical Society, 2004. http://dx.doi.org/10.1021/bk-2004-0885.ch004.

Full text
APA, Harvard, Vancouver, ISO, and other styles
8

Song, Xuezheng, Jamie Heimburg-Molinaro, Nancy M. Dahms, David F. Smith, and Richard D. Cummings. "Preparation of a Mannose-6-Phosphate Glycan Microarray Through Fluorescent Derivatization, Phosphorylation, and Immobilization of Natural High-Mannose N-Glycans and Application in Ligand Identification of P-Type Lectins." In Methods in Molecular Biology, 137–48. Totowa, NJ: Humana Press, 2011. http://dx.doi.org/10.1007/978-1-61779-373-8_9.

Full text
APA, Harvard, Vancouver, ISO, and other styles
9

Rojo, Pep, Marina Bellido, Xavier Verdaguer, and Antoni Riera. "Chiral Bidentate Heterodonor P-N-Other-Ligands." In Chiral Ligands, 33–80. CRC Press, 2021. http://dx.doi.org/10.1201/9780367855734-2.

Full text
APA, Harvard, Vancouver, ISO, and other styles
10

Fiaud, J. C., and A. Marinetti. "Phosphoramidite [P(O,O,N)] Ligands." In Organophosphorus Compounds (incl. RO-P and RN-P), 1. Georg Thieme Verlag KG, 2009. http://dx.doi.org/10.1055/sos-sd-042-00480.

Full text
APA, Harvard, Vancouver, ISO, and other styles

Conference papers on the topic "P-N ligands"

1

Pi, Xiaodong, Zachary Holman, and Uwe Kortshagen. "Silicon and Germanium Nanocrystal Inks for Low-Cost Solar Cells." In ASME 2010 4th International Conference on Energy Sustainability. ASMEDC, 2010. http://dx.doi.org/10.1115/es2010-90445.

Full text
Abstract:
Silicon is the most widely used material in the microelectronics and photovoltaics industry. Currently it is used in one of two forms: as wafers of single- or polycrystalline material or as CVD deposited thin film material. While crystalline silicon solar cells achieve high efficiencies, the silicon wafer contributes significantly to the module cost. Thin film silicon solar cells can be produced at much lower cost, but they also feature lower efficiencies. In this presentation, we discuss an alternate route to forming silicon (Si) or germanium (Ge) thin films from solution on flexible substrates. Silicon (germanium) nanocrystals are formed in a nonthermal plasma. In the plasma environment a Si/Ge precursor is broken down by electron impact, leading to the nucleation and growth of Si or Ge crystals. By adding dopant precursors, p- and n-doped as well as intrinsic crystals can be formed. Organic ligands can be attached in the plasma such that nanocrystals become soluble in organic solvents. These “nanocrystal inks” can be used to form Si or Ge films with ultra-low-cost printing or coating techniques. Film properties of Si/Ge-ink processed films will be discussed. Proof-of-concept demonstrations of solar cells produced from silicon inks will be presented.
APA, Harvard, Vancouver, ISO, and other styles
2

Stojković, Danijela, Maja Đukić, Marija Ristić, Marina Ćendić Serafinović, Svetlana Belošević, Emina Mrkalić, and Ivan Jakovljević. "Synthesis, characterization and HSA interactions of a new piano-stool ruthenium(II) complex containing a thioamide-type ligand." In 2nd International Conference on Chemo and Bioinformatics. Institute for Information Technologies, University of Kragujevac, 2023. http://dx.doi.org/10.46793/iccbi23.507s.

Full text
Abstract:
The synthesis and characterization of a newly synthesized piano-stool [Ru-(ɳ6-p-cymene)Cl2L] complex with a ligand 3-amino-2-cyano-N-phenyl-3-(4-phenyl-1-piperazinyl)-2-propenethioamide are presented. The complex was obtained in good yield as an ochre powderand was characterized by elemental analysis, 1H and 13C NMR, IR, conductometry, and melting point. The fluorescence binding studies showed that the interaction of the complex with albumin occurs by a static quenching mechanism and that the complex showed a very high value of the binding constant with one binding site (Kb = 1.68 × 107; n = 1.37). In order to identify the binding location in the HSA molecule, competitive experiments with site markers (eosin Y (site I) and ibuprofen (site II)) were performed. Obtained results showed that the examined complex binds to the site I of subdomain IIA (for eosin Y: Kb = 5.94 × 102; n = 0.65 vs. for ibuprofen: Kb = 1.38 × 107; n= 1.34).
APA, Harvard, Vancouver, ISO, and other styles
3

Gildenast, Hans, Franziska Busse, and Ulli Englert. "Competition of the Donor Atoms - Coordination Chemistry of a O,P,N tritopic Ligand - Complexes, Supramolecules and Metal-Organic Frameworks." In The 2nd International Online Conference on Crystals. Basel, Switzerland: MDPI, 2020. http://dx.doi.org/10.3390/iocc_2020-07321.

Full text
APA, Harvard, Vancouver, ISO, and other styles
4

Nakajima, T., T. Koyama, Y. Nishida, H. Tanaka, E. Kakishita, and K. Nagai. "INHIBITORY EFFECTS OF ITP SERA ON BINDING OF ANTIPLATELET GLYCOPROTEIN (GP) IIb/IIIa MONOCLONAL ANTIBODIES TO HUMAN UMBILICAL VASCULAR ENDOTHELIAL CELLS (HUVE)." In XIth International Congress on Thrombosis and Haemostasis. Schattauer GmbH, 1987. http://dx.doi.org/10.1055/s-0038-1643363.

Full text
Abstract:
Some ITP patients have specific autoantibodies to platelet GP IIb/IIIa. On the other hand, HUVE were shown to synthesize platelet GP IIb/IIIa like substances. Therefore, we studied the binding of ITP sera to HUVE by showing the inhibitory effect of ITP sera on the binding of anti-platelet GP IIb/IIIa monoclonal antibodies to HUVE. HUVE were cultured according to the method of Jaffe et al. 125-I-anti-platelet GP IIb/IIIa monoclonal antibody (125-I-Anti-GP) (40.3 mCi/mg), 40 yl, was added to a cell suspension of HUVE (1.5 × 104/500 μl) in a plastic RIA tube. After incubation for 30 min. at 4°C and centrifugation of 10,000 xg for 3 min., the radioactivity of the cell pellet was measured. Specific binding was determined by determining the difference between cell-bound radioactivity in the absence and presence of an excess amount of unlabelled ligand at 100 x concentrations. Scatchard analysis using 125-I-Anti-GP showed that the maximum binding capacity was 8 × 104/cell and Kd was 40.2 nM. The binding rate of 125-I-Anti-GP to HUVE treated with ITP (high PAIgG) sera (n=6) was 15.2±3.3% compared with 24.0±7.5%, observed for HUVE treated with normal sera (n=10). Treatment of ITP sera to HUVE significantly lowered the binding of 125-I-Anti-GP to HUVE (P<0.05). A combined analysis of SDS-PAGE and Western blotting of washed platelet and endothelial cell lysates shows that two proteins from each cells had similar or identical molecular masses to GP IIb/IIIa.These findings show that there are GP IIb/IIIa on the HUVE, ITP sera from our patients may have antibodies to HUVE GP IIb/IIIa and that anti-platelet GP IIb/IIIa antibodies in the ITP sera may bound not only to some platelets, but also to the HUVE
APA, Harvard, Vancouver, ISO, and other styles
5

RODRIGUES, RENATA CRISTINA BEZERRA, IZABELLA SYANE OLIVEIRA PEREIRA, CLÁUDIA CRUZ BARBOSA, CLÁUDIA SIMONE BALTAZAR DE OLIVEIRA, and GLENDA MARREIRA VIDAL DO NASCIMENTO. "VALORES DE ÍNDICE DE MASSA CORPORAL E IDADE EM MULHERES DA ZONA RURAL DE UM MUNICÍPIO DO NORDESTE DO PARÁ." In I Congresso Brasileiro de Doenças Crônicas On-line. Revista Multidisciplinar em Saúde, 2022. http://dx.doi.org/10.51161/cronics/5858.

Full text
Abstract:
Introdução: A transição nutricional favorece o ganho de peso e a elevação do índice de massa corporal. Mais da metade dos brasileiros, 55,4%, está com excesso de peso, com estimativa de 62,6% para as mulheres. Estes problemas alcançam, igualmente, as populações rurais, onde o distanciamento geográfico torna maiores as dificuldades de acesso aos serviços de saúde, com consequências, principalmente, para o público feminino, naturalmente exposto a variações hormonais da menopausa que favorecem o ganho de peso. Objetivo: relacionar os valores de IMC e a idade de mulheres da Zona Rural de um Município do Nordeste do Pará. Material e métodos: Pesquisa epidemiológica transversal, descritiva, quantitativa, com mulheres da Zona Rural de um Município do Nordeste do Pará. Este estudo foi aprovado pelo Comitê de Ética e Pesquisa sob parecer nº 2892820. Resultados: Considerando o total de mulheres (n=35), 71% estavam acima do peso (43% sobrepeso e 28% obesidade). Para eutrofia houve média de idade de 30,3 anos; no sobrepeso a média de idade aumentou para 36,6 anos. Nos graus 1 e 2 de obesidade, a média de idade subiu para 39,8 e 45,3 anos, respectivamente, e na obesidade grau 3, para 53 anos. O aumento da média de idade esteve diretamente ligado ao aumento de IMC, demonstrando aparente relação inversa entre IMC e idade média das participantes. No entanto, quando aplicado o teste G, não foram observadas diferenças significativas (p-valor = 0,1823). Igualmente para o teste Anova, (p=0,0773). Para esta população a correlação entre a idade e o IMC foi fraca, segundo o teste de correlação de Pearson (r = 0,26), que pode estar relacionado ao pequeno tamanho amostral. Conclusão: Excesso de peso e obesidade são problemas reais na população rural feminina. O resultado foi consonante a teoria de que a menopausa influencia no ganho de peso. Houve uma aparente relação inversa entre o IMC e a idade, pois na população mais jovem prevaleceu a eutrofia, e nas maiores de 40 anos o excesso de peso, mas que não foi considerada estatisticamente significativa. Com base nos resultados, é possível verificar fragilidades da população rural, incentivando novos estudos.
APA, Harvard, Vancouver, ISO, and other styles
6

Wu, K., C. Manner, and A. Tsai. "CHARACTERIZATION OF SERUM PROSTACYCLIN BINDING DEFECTS IN THROMBOTIC THROMBOCYTOPENIC PURPURA (TTP)." In XIth International Congress on Thrombosis and Haemostasis. Schattauer GmbH, 1987. http://dx.doi.org/10.1055/s-0038-1643978.

Full text
Abstract:
To understand further the pathophysiologic significance of PGI2 binding defects in TTP, we measured serum PGI2 binding activity in 12 TTP patients and matched controls. Serum binding of PGI2 was measured by Sephadex G-25 gel filtration. The mean binding activity in 33 healthy subjects ages 20-40 years was 39.9 ± S.D 4.4%. The mean value of TTP (n=12) was significantly lower (26.2 ± 4.1, P <0.01). Serum from 5 severe ITP, 5 DIC and 5 thrombocythemia exhibited normal binding ctivity. To determine the binding kinetics we utilized 3H-iloprost in a gel filtration method described by Hirose and Kano (Biochim. Biophys. Acta. 751:376, 1971). To 50 mg of Sephadex G-50, 0.435 ml of 50mM Tris buffer (pH 7.4) was added. After swelling of the gel was completed 0.195 ml of the buffer solution containing serum and 3H-iloprost was added. The sample was mixed and the protein and ligand concentration was determined. The computer fitting of the binding isotherm according to the originally proposed equation yielded a binding curve consistent with a single class of binding sites. The Kd value of normal serum was 70 μM and the B 48 nmol/ml. Acute TTP serum exhibited a reduced bindingXaffinity (Kd 236 μM) and a slightly elevated capacity (Bmax 85 nmols/ml). The binding parameters improved following successful treatment but the Kd remained subnormal (120 μM). These data indicate that reduced PGI2 binding activity is due to lower affinity of the PGI2 binding proteins. The relationship between defective PGI2 binding activity and PGI2 production was then evaluated. Serial serum and 24 hour urine were collected. Urinary samples were extracted and their 6-Keto-PGF1α (6KP) and thromboxane TXB2 levels were measured by RIA. TTP patients in remission had normal levels of urinary 6KP and TXB2 while urinary 6KP and TXB2 were elevated in relapsing TTP. Defective binding was noted when relapse began to occur while elevated 6KP and TXB2 were noted 48 hrs later. Both 6KP and TXB2 were normalized when the disease was controlled. Our findings indicate that defective PGI2 binding plays an important role in causing excessive platelet activation and platelet-vessel wall interaction in TTP.
APA, Harvard, Vancouver, ISO, and other styles
You might also be interested in the extended bibliographies on the topic 'P-N ligands' for particular source types:
Journal articles Dissertations / Theses
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!

To the bibliography