Intramolecular d~(10)-d~(10) interactions in neutral, dinuclear Au(I) complexes supported by amino-thiazoline- and -thiazole-based P,N-phosphine ligands

摘要

The ligands N-(diphenylphosphino)-thiazoline-2-amine (1), N-(diphenylphosphino)thia-zol-2-amine (2) and N-(diphenylphosphino)-1,3,4-thiadiazol-2-amine 3, readily reacted with [AuCl(THT)] in dichloromethane to form the linearly coordinated complexes [AuCl(l-κP)] (5), [AuC1(2-kP)] (6) and [AuC1(3-kP)] (7), respectively. Facile deprotonation with t-BuOK or Na2CO3 of 5-7 afforded the stable, neutral dinuclear complexes [AuCl(1_(-H)-κP,κN)]2 (8), [AuC1(2_(-H)-κP,κN)]2 (9) and [AuC1(3_(-H)-κP,κN)]2 (10), respectively. The crystal structures of the mononuclear complexes 5,6 and 7 and of the dinuclear complexes 8,9 and 10 have been determined by X-ray diffraction. The latter represent rare examples of neutral complexes supported by bridging P,N-ligands which display intramolecular Au(I)···Au(I) d~(10)-d~(10) interactions, in the range 2.8592(4)-2.8831(4) A.