作者:Pierre A. Bonnardel、R. V. Parish、Robin G. Pritchard
DOI:10.1039/dt9960003185
日期:——
New complexes of the type [AuCl2L] have been prepared, where L is a chelate consisting of a phenyl group bearing an N-donor substituent (oxazoline and/or dimethylaminomethyl). The structures of two of these, together with that of [AuClC6H3(CH2NMe2)2-2,6}]2[Hg2Cl6], have been determined by X-ray crystallography; the gold atoms exhibit strict square-planar geometry in all cases. The chloride ligands undergo ready substitution by other halides, thiocyanate, acetate or diethyldithiocarbamate. The monodithiocarbamate complexes [Au(S2CNEt2)L]+ contain chelated S2CNEt2 groups whereas in [Au(S2CNEt2)2L] the L ligand is monodentate (through C), one S2CNEt2 is monodentate, the other bidentate; in solution the two S2CNEt2 ligands appear equivalent on the NMR time-scale, indicating a rapid equilibrium between the two possible forms.
我们制备出了[AuCl2L]类型的新络合物,其中 L 是一种螯合物,由一个带有 N-供体取代基(噁唑啉和/或二甲基氨基甲基)的苯基组成。X 射线晶体学已经确定了其中两种螯合物的结构,以及 [AuClC6H3(CH2NMe2)2-2,6}]2[Hg2Cl6] 的结构。氯配体很容易被其他卤化物、硫氰酸盐、醋酸盐或二乙基二硫代氨基甲酸盐取代。单二硫代氨基甲酸酯配合物 [Au(S2CNEt2)L]+ 中含有螯合的 S2CNEt2 基团,而在 [Au(S2CNEt2)2L] 中,L 配体是单配位的(通过 C),一个 S2CNEt2 是单配位的,另一个是双配位的;在溶液中,两个 S2CNEt2 配体在核磁共振时间尺度上看起来是等价的,表明这两种可能的形式之间迅速达到了平衡。