Heavy-Metal-Containing Polyhedral Metallasiloxane Derived from an Aminosilanetriol: Synthesis and Structural Characterization of [(PbO)₆(R₂Si₂O₃)₂] (R = (2,6-<i>i</i>Pr₂C₆H₃)N(SiMe₃))^†

The reaction of RSi(OH)3 with Pb[N(SiMe3)2]2 in a 1:1.5 molar ratio in THF/hexane afforded a hexameric lead(II)siloxane [(PbO)6(R2Si2O3)2] [R = (2,6-iPr2C6H3)N(SiMe3)] 1. The molecular structure of 1 shows a central (PbO)6 motif enclosed by two outer R2Si2O3 siloxane ligands.将RSi(OH)₃与Pb[N(SiMe₃)₂]₂按照1:1.5的摩尔比在四氢呋喃（THF）/正己烷（hexane）混合溶剂中进行反应，得到六聚体铅(II)硅氧烷配合物[(PbO)₆(R₂Si₂O₃)₂]，其中R为(2,6-二异丙基苯基)(三甲基硅基)氨基，记为配合物1。该配合物1的分子结构显示，其核心为(PbO)₆结构基元，该基元被两个外侧的R₂Si₂O₃硅氧烷配体所包覆。