Issue 5, 2013

Haloaurate and halopalladate imidazolium salts: structures, properties, and use as precursors for catalytic metal nanoparticles

Abstract

The synthesis and characterisation of a series of new gold- and palladium-containing symmetrical imidazolium salts are described which display significant cation-dependent effects determined by the structure of the alkyl chains of the imidazolium motifs. Whereas direct reduction of the Pd salts can produce stable nanoparticles (NPs) coated by imidazolium salts, the addition of strong base to the Pd or Au salts before reduction gives stable NPs, potentially pacified by N-heterocyclic carbene units. The possibility of NP surface protection by metal–carbon bonds in these systems is investigated by spectroscopic, synthetic, and catalytic investigations, providing support for the hypothesis. Significantly, the catalytic activity of the NPs is not inhibited by the continued presence of the ligands.

Graphical abstract: Haloaurate and halopalladate imidazolium salts: structures, properties, and use as precursors for catalytic metal nanoparticles

Supplementary files

Article information

Article type
Paper
Submitted
29 8 2012
Accepted
22 10 2012
First published
09 11 2012

Dalton Trans., 2013,42, 1385-1393

Haloaurate and halopalladate imidazolium salts: structures, properties, and use as precursors for catalytic metal nanoparticles

C. J. Serpell, J. Cookson, A. L. Thompson, C. M. Brown and P. D. Beer, Dalton Trans., 2013, 42, 1385 DOI: 10.1039/C2DT31984E

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