Issue 18, 2002

Acetylenephosphino gold(i) derivatives: structure, reactivity and luminescence properties

Abstract

We have synthesised the acetylenephosphino gold(I) derivatives, AuX(PPh2CCH) (X = Cl, Br, I, C6F5). X-Ray diffraction studies show that the chloro derivative is a dimer connected by two short hydrogen bonds from the acetylenic hydrogen to chlorine, whilst the iodo derivative is also a dimer because of a gold–gold interaction of 3.0625(9) Å. The crystal structure of the pentafluorophenyl derivative shows the presence of intermolecular hydrogen bonds Au⋯H (3.07 Å, 143°), also from the acetylenic hydrogen, which link the molecules into chains. The possibility of preparing alkynyl derivatives has been investigated but only complex [Au(C6F5)(PPh2CC)Au(C6F5)][N(PPh3)2] 6 has been obtained in a pure state. Complex 6 luminesces at room temperature in the solid state, and all the complexes are luminescent at 77 K with excitation maxima in the range 292–335 nm and emission maxima between 445 and 533 nm.

Graphical abstract: Acetylenephosphino gold(i) derivatives: structure, reactivity and luminescence properties

Supplementary files

Article information

Article type
Paper
Submitted
17 May 2002
Accepted
22 Jul 2002
First published
27 Aug 2002

J. Chem. Soc., Dalton Trans., 2002, 3624-3629

Acetylenephosphino gold(I) derivatives: structure, reactivity and luminescence properties

M. Bardají, P. G. Jones and A. Laguna, J. Chem. Soc., Dalton Trans., 2002, 3624 DOI: 10.1039/B204791H

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