Low-Coordinate Germylene and Stannylene Heterocycles featuring Sterically Tunable Bis(amido)silyl Ligands
作者:S. M. Ibrahim Al-Rafia、Paul A. Lummis、Michael J. Ferguson、Robert McDonald、Eric Rivard
DOI:10.1021/ic101485a
日期:2010.10.18
series of monomeric heterocyclic metallylenes [iPr2Si(NR)2}M:] (M = Ge and Sn; R = Dipp = 2,6-iPr2C6H3 or SiPh3) have been prepared. Preliminary atom-transfer chemistry involving the new low-valent germylenes with the chalcogen sources Me3NO and S8 yielded the corresponding dimeric oxo- and sulfido complexes (e.g., [iPr2Si(NDipp)2}Ge(μ-E)]2; E = O and S). Structural analyses of the metallylenes and
已经制备了一系列单体杂环金属亚甲基[ i Pr 2 Si(NR)2 } M:](M = Ge和Sn; R = Dipp = 2,6 - iPr 2 C 6 H 3或SiPh 3)。初步的原子转移化学包括具有硫族元素源Me 3 NO和S 8的新的低价亚甲基苯,生成了相应的二聚氧-硫键配合物(例如[ i Pr 2 Si(NDipp)2 } Ge(μ-E )] 2; E = O和S)。对金属亚甲基及其氧化产物的结构分析表明,在NSiN螯合物中并入伞形三芳基甲硅烷基(SiPh 3)相对于Dipp基团,对第14基团中心提供了额外的空间保护。将可空间修饰的-SiAr 3(Ar =芳基)单元作为双(酰胺基)配体阵列的一部分包括在内,代表了该领域的一种新方法,并且在实现越来越高的空间体积方面具有可观的前景。