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通过KAuCl4与tpptpy(tpptpy=4-′p-三苯基膦甲基苯基-2,2′:6,2″-三联吡啶)反应得到一种加合物[H2(tpptpy)(AuCl2)Cl2]2.H2O,该加合物经过单晶X-射线衍射进行结构表征。结果显示,该加合物由[H2(tpptpy)]3+,[AuCl2]-和两个氯离子构成,并通过分子间(内)的C—H…Cl,O—H…Cl,N—H…Cl和C—H…O氢键形成了三维疏水孔洞结构。AuCl4-使水分子氧化产生H+从而使三联吡啶配体质子化,进而抑制了Au(Ⅲ)与tpptpy的配位反应,同时质子化的配体可以与AuCl2-形成难溶加合物,促进了Au(Ⅲ)向Au(Ⅰ)还原反应的进行。
An adduct [H2 (tpptpy) (AuCl2) Cl2 was obtained by reaction of KAuCl4 with tpptpy (tpptpy = 4’-p-triphenylphosphinemethylphenyl-2,2 ’: 6,2 "-terpyridine) ] 2.H2O, the adduct was characterized by single crystal X-ray diffraction and the result showed that the adduct consisted of [H2 (tpptpy)] 3 +, [AuCl2] - and two chloride ions and passed The three-dimensional hydrophobic pore structure is formed by intramolecular (intra) C-H ... Cl, O-H ... Cl, N-H ... Cl and C-H ... O hydrogen bonds. AuCl4- oxidizes water molecules to generate H + The protonated ligands can inhibit the coordination reaction between Au (Ⅲ) and tpptpy. At the same time, the protonated ligands can form insoluble complexes with AuCl 2 and promote the reduction of Au (Ⅲ) to Au (Ⅰ) get on.