and tin-119 NMR spectra were observed for SnX4(PBu3)2 (X = Cl, Br) and a mixture gave all six possible trans phosphine isomers in the statistical distribution. [SnX5(PBu3)]− (X = Cl, Br) species show some disproportionation, although the [SnX5(PBu3)]− ion is the dominant species in solution. A mixture of [SnCl5(PBu3)]− and [SnBr5-(PBu3)]− gave a complex mixture in solution, but all twelve isomers of
摘要已记录SnX4(X = Cl,Br,I)及其混合物的Tin-119 NMR光谱。观察到所有15种可能的SnClxBryIz(x + y + z = 4)物种。对SnX-5和SnX2-6(X = Cl,Br)以及SnCl2-6和SnBr2-6的等摩尔混合物观察到Tin-119 NMR光谱,得到[SnClxBr6-x] 2-的所有十种可能的异构体统计分布。观察到SnX4(PBu3)2(X = Cl,Br)的
磷31和
锡119 NMR光谱,混合物在统计分布中给出了所有六个可能的反式膦异构体。尽管[SnX5(PBu3)]-离子是溶液中的主要物种,但[SnX5(PBu3)]-离子显示出一些歧化。[SnCl5(PBu3)]-和[SnBr5-(PBu3)]-的混合物在溶液中提供了复杂的混合物,但是[SnCl5Br5-x(PBu3)]-系列的所有十二个异构体均被鉴定。众所周知的成对加性模型非常适合四卤化