Abstract
Abstract The reaction between (tht)AuCl (tht = tetrahydrothiophene) and KCN leads to gold(I) cyanide. This can be treated with liquid amines or azaaromatics L to give crystalline molecular complexes LAuCN, the first complexes of the type (amine)cyanogold(I): L = cyclohexylamine, isobutylamine, isopropylamine, diethylamine, morpholine, piperidine, pyrrolidine, 2,4-lutidine, 3,5-lutidine, and 4- picoline. The cyclohexylamine complex was also obtained as the adduct LauCN L and the pyrrolidine complex in the ionic form [L2Au]+ [Au(CN)2]-. Two polymorphs of the 3,5-lutidine complex were obtained. Ethylenediamine gave the 2:1 complex L(AuCN)2. Several of the structures were difficult to refine because of pseudosymmetry (e. g. polar axes). The packing diagrams were analyzed in terms of Au-Au contacts and NH....N hydrogen bonds. As proof of the principle that the method is also suitable for other ligands, the complex with t-butyldiisopropylphosphane was synthesized and structurally characterized
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