CH(2)Cl(2) to the preferred trans form trans-3. The closely related cis-[Pt(dppf)(2)(SeCC-n-C(5)H(11))(2)] (4) (dppf = bis(diphenylphosphino)ferrocene) was prepared by a similar metathetical reaction using the platinum chloride complex of the chelating dppf to impose the cis geometry. The structures of the cis and trans complexes have been investigated in solution by heteronuclear NMR ((31)P, (77)Se
2当量的LiSeCC-nC(5)H(11)(1)与顺式PtCl(2)(Ph(3)P)(2)(2)的反应得到Pt的顺式和反式异构体的混合物(Ph(3)P)(2)(SeCC-nC(5)H(11))(2)(3),在CH(2)Cl(2)中缓慢异构化为优选的反式trans-3。密切相关的顺式-[Pt(dppf)(2)(SeCC-nC(5)H(11))(2)](4)(dppf =双(
二苯基膦基)
二茂铁)是通过使用螯合dppf的
氯化铂络合物可施加顺式几何形状。通过异核NMR((31)P,(77)Se和(195)Pt)在溶液中研究了顺式和反式复合物的结构,在反式3和4的情况下,其特征是固态通过单晶X射线衍射。将配位几何形状从顺式更改为反式会导致结构和光谱参数发生重大变化,