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Type: Artigo de periódico
Title: Facile conversion of bis(alkynyl) into diyne ligand on platinum assisted by electrophilic gold phosphine
Author: Ursini, CV
Dias, GHM
Horner, M
Bortoluzzi, AJ
Morigaki, MK
Abstract: P-31 NMR spectroscopy measurements were used to establish the course for the stoichiometric-dependent reactions between [Au(PPh3)](+) and [Pt(C drop CPh)(2)(dppf)] (1), which for equimolar amounts afford as the unique product [Pt-{eta (3)-C(C drop CPh)double bondC(Ph)Au(PPh3)}(dppf)](+) (2), but any excess of 1 gives also [Pt(eta (2)-PhC drop CC drop CPh)(dppf)] (3) [dppf = 1,1'-bis(diphenylphosphine)ferrocene]. Both compounds 2 and 3 were obtained straightforwardly by the reactions of 3 with [Au(PPh3)](+) and [Pt(C2H4)(dppf)] with 1,4-diphenylbutadiyne, respectively. The X-ray crystal structure analysis of 3 confirmed a trigonal-planar coordination geometry about the platinum atom, and a bent eta (2)-coordinated diyne ligand. (C) 2000 Elsevier Science B.V. All rights reserved.
Subject: platinum
Country: Inglaterra
Editor: Pergamon-elsevier Science Ltd
Citation: Polyhedron. Pergamon-elsevier Science Ltd, v. 19, n. 22-23, n. 2261, n. 2268, 2000.
Rights: fechado
Identifier DOI: 10.1016/S0277-5387(00)00487-3
Date Issue: 2000
Appears in Collections:Unicamp - Artigos e Outros Documentos

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