(Isocyanide)gold(I) Thiosalicylates: Supramolecular Assembly Based on both Auriophilic and Hydrogen Bonding

Abstract

Reaction of (RNC)AuCl [R = tert-butyl (1a), mesityl (1b)] with sodium thiosalicylate in the two-phase system water/dichloromethane gives high yields of the corresponding (isocyanide)gold(I) thiosalicylates (2a,b). The solid-state structures of 2a,b have been determined by X-ray diffraction studies. The supramolecular structure of both compounds is governed by Au--Au interactions [2a, Au--Au 3.157(2) Å; 2b, Au--Au 3.3186(5) Å] and hydrogen bonding through the carboxylic acid groups.