trans-positions. In the anion of 21 the phenyl substituents occupy the equatorial positions of a lightly distorted trigonal bipyramid. A thorough spectroscopical investigation of the tin complexes 1–19, including X-ray structural studies, which were possible for complexes with R′=aryl, revealed that these complexes are monomeric with a distorted trigonal bipyramidal [SnR′2Cl3]− anion. Both aryl groups occupy equatorial
五角
锡是1950年代后期以来已知的,但对
铅形成相似结构的能力知之甚少。最初我们调查了一些tetraorganylphosphonium
氯化物之间的反应[PR 4 ] +
氯-(R = Me中,卜Ñ,且Ph)和几个diorganyltin
氯化物SNR ' 2
氯2(R ' =甲基,乙基,
镨Ñ,卜n,Ph,o-,m-,p -Tol)在100至240°C之间。新颖五配位
锡络合物,tetraorganylphosphonium diorganyltrichlorostannates [PR 4 ] [SNR ' 2CL 3 ](1 - 19),形成在良好至优异的产量。在第二步骤中,这种合成方法扩展到包括diphenyllead二
氯化博士的反应2 PBCL 2与[PR 4 ] +
氯-(R =卜Ñ中,Ph)。令人惊讶地,观察到两个
氯化物的转移形成了六配位的
铅物质[PBu n 4 ] 2 [PbPh 2 Cl