Janzen Michael C., Jenkins Hilary A., Rendina Louis M., Vittal Jagadese J., Puddephatt Richard J.
Department of Chemistry, The University of Western Ontario, London, Ontario, Canada, N6A 5B7.
Inorg Chem. 1999 May 3;38(9):2123-2130. doi: 10.1021/ic980862p.
The first metallacycles formed by oxidative addition of tin-sulfur, tin-selenium, tin-tellurium, and germanium-tellurium bonds to platinum(II) are reported. In particular, the ring compounds [(R(2)SnE)(3)], where R = Me, Ph and E = Se, Te, and the new compound [(Me(2)GeTe)(3)], react with [PtMe(2)(bu(2)bpy)] (bu(2)bpy = 4,4'-di-tert-butyl-2,2'-bipyridine) to give the new organoplatinum(IV) metallacycles [PtMe(2)(R(2)SnE)(2)(bu(2)bpy)] and [PtMe(2)(Me(2)GeTe)(2)(bu(2)bpy)], respectively. The tin-containing metallacycles complexes can undergo exchange of either the R(2)Sn or the E groups by reaction with [(R'(2)SnE)(3)] or [(R(2)SnE')(3)], respectively, to give the corresponding new metallacycles of general formula [PtMe(2)(R(2)SnE-R'(2)SnE)(bu(2)bpy)] or [PtMe(2)(R(2)SnE-R(2)SnE')(bu(2)bpy)]. The isostructural series of complexes [PtMe(2)(Ph(2)SnE)(2)(bu(2)bpy)] with E = S, Se, and Te have been characterized by X-ray structure determinations. It is shown that (119)Sn NMR is a useful method of structure determination for these metallacyclic compounds.
报道了通过锡-硫、锡-硒、锡-碲和锗-碲键与铂(II)进行氧化加成反应形成的首例金属环化合物。特别地，环状化合物[(R₂SnE)₃]（其中R = 甲基、苯基且E = 硒、碲）以及新化合物[(Me₂GeTe)₃]与[PtMe₂(bu₂bpy)]（bu₂bpy = 4,4'-二叔丁基-2,2'-联吡啶）反应，分别生成新的有机铂(IV)金属环化合物[PtMe₂(R₂SnE)₂(bu₂bpy)]和[PtMe₂(Me₂GeTe)₂(bu₂bpy)]。含锡的金属环配合物分别与[(R'₂SnE)₃]或[(R₂SnE')₃]反应时，R₂Sn或E基团能够发生交换，从而得到通式为[PtMe₂(R₂SnE-R'₂SnE)(bu₂bpy)]或[PtMe₂(R₂SnE-R₂SnE')(bu₂bpy)]的相应新金属环化合物。通过X射线结构测定对E = 硫、硒和碲的同构系列配合物[PtMe₂(Ph₂SnE)₂(bu₂bpy)]进行了表征。结果表明，¹¹⁹Sn核磁共振是确定这些金属环化合物结构的一种有用方法。
