Structure and Synthesis of Dihalogenodicyanoaurate Complexes [Ph3PR][Au(CN)2Hal2], Hal = Cl, R = Me, СH2Ph; Hal = Br, R = cyclo-C6H11; Hal = I, R = Ph

Interaction of organyltriphenylphosphonium halides with potassium dihalogenodicyanoaurates in water followed by recrystallization reaction products from acetonitrile or DMSO has been used to synthesize gold(III) ionic complexes [Ph3PMe][Au(CN)2Cl2] (1), [Ph3PCH2Ph][Au(CN)2Cl2] (2), [Ph3PC6H11-cyclo][Au(CN)2Br2] (3), and [Ph4P][Au(CN)2I2] (4), which have structurally characterized the X-ray analysis method (CIF files CCDC No. 1901681 1912903 1912919 2048146 (4)). According data crystals 1–4 consist centrosymmetric square-planar [Au(CN)2Hal2]– anions (the Au–Hal average bond lengths are 2.417(3) Å 2.280(2) 2.4203(13) 2.6035(10) (4); Au–C 2.06(2) 2.010(7) 2.009(7) (3,) 1.998(6) (4)); phosphorus atoms cations a slightly distorted tetrahedral coordination P–C 1.782(9)-1.806(8) 1.788(4)-1.813(5) 1.790(5)-1.813(5) (3) 1.793(6)-1.799(5) The structural organization 2–4 is caused interionic С–H∙∙∙N≡C hydrogen bonds (C–HPh∙∙∙N≡C 2.56 (2); C–HPh∙∙∙N≡C 2.43–2.59 Å, C–Hcyclohexyl∙∙∙N≡C 2.47 2.63 (4)), while 1 no significant contacts observed.