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Titolo:
Syntheses and characterization of heterobimetallic complexes (dppf)Pt(dithiolate) (dppf : bis(diphenylphosphino)ferrocene); X-ray crystal structures of(dppf)PtL where L = dmit, phdt and i-mnt
Autore:
Noh, DY; Seo, EM; Lee, HJ; Jang, HY; Choi, MG; Kim, YH; Hong, JK;
Indirizzi:
Seoul Womens Univ, Dept Chem, Seoul 139774, South Korea Seoul Womens UnivSeoul South Korea 139774 em, Seoul 139774, South Korea Yonsei Univ, Dept Chem, Seoul 120749, South Korea Yonsei Univ Seoul South Korea 120749 ept Chem, Seoul 120749, South Korea Korea Basic Sci Inst, Mass Spectrometry Anal Grp, Taejon 305333, South Korea Korea Basic Sci Inst Taejon South Korea 305333 aejon 305333, South Korea
Titolo Testata:
POLYHEDRON
fascicolo: 15-16, volume: 20, anno: 2001,
pagine: 1939 - 1945
SICI:
0277-5387(20010630)20:15-16<1939:SACOHC>2.0.ZU;2-D
Fonte:
ISI
Lingua:
ENG
Soggetto:
1,1'-BIS(DIPHENYLPHOSPHINO)FERROCENE DPPF; HETEROPOLYMETALLIC COMPLEXES; PHOSPHINE COMPLEXES; REDOX BEHAVIOR; CHEMISTRY; PLATINUM; NI(DPHDT)(2); LIGANDS; NICKEL;
Keywords:
Pt(II); dithiolate; dppf; x-ray crystal structures; cyclic voltammetry; P-31 NMR;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
24
Recensione:
Indirizzi per estratti:
Indirizzo: Noh, DY Seoul Womens Univ, Dept Chem, Seoul 139774, South Korea Seoul Womens Univ Seoul South Korea 139774 l 139774, South Korea
Citazione:
D.Y. Noh et al., "Syntheses and characterization of heterobimetallic complexes (dppf)Pt(dithiolate) (dppf : bis(diphenylphosphino)ferrocene); X-ray crystal structures of(dppf)PtL where L = dmit, phdt and i-mnt", POLYHEDRON, 20(15-16), 2001, pp. 1939-1945

Abstract

Heterobimetallic complexes of the type (dppf)PtL (dppf = 1,1'-bis(diphenylphosphino)ferrocene; L = dmit (1,3-dithiole-2-thione-4,5-dithiolate), dddt (5,6-dihydro-1,4-dithiin-2,3-dithiolate), phdt (6-hydro-5-phenyl-1,4-dithiin-2,3-dithiolate), dphdt (5,6-diphenyl-1,4-dithiin-2,3-dithiolate), mtdt (1,2-bis(methylthio)ethylene-1,2-dithiolate), i-mnt (2,2-dicyano-1,1-ethylenedithiolate)) have been synthesized and studied by a high-resolution FAB-MS,cyclic voltammetry and P-31 NMR. (Dppf)Pt(i-mnt) exhibits one reversible redox peak at E-1/2 = 1.225 V and a strong Pt-P coupling constant (J(Pt-P) =3237 Hz) due to the electron-accepting property of i-mnt ligand. On the contrary, (dppf)Pt(mtdt) shows three reversible redox peaks corresponding to [dppf](0/+) (E-1/2(1) = 0.470 V), [Pt(mtdt)(0/+) (E-1/2(2) = 1.050 V) and [Pt(mtdt)(+/2+) (E-1/2(3) = 1.405 V) processes and a weak Pt-P coupling constant (J(Pt-P) = 2962 Hz) due to relatively strong electron-donor property of mtdt ligand. X-ray structural analyses were performed for the three complexes: (dppf)PtL where L = dmit, phdt and i-mnt. The P2PtS2 core shows a distorted square planar geometry for the three complexes with P(1)-Pt-P(2) bite angle being larger than 96 degrees. The S(1)-Pt-S(2) bite angle of the i-mnt complex is the smallest (74.42 degrees) because of the formation of thefour-membered ring. (C) 2001 Elsevier Science Ltd. All rights reserved.

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Documento generato il 24/09/20 alle ore 11:24:25