Low-Coordinate Germylene and Stannylene Heterocycles featuring Sterically Tunable Bis(amido)silyl Ligands

被引：48

作者：

Al-Rafia, S. M. Ibrahim ^{[1
]}

Lummis, Paul A. ^{[1
]}

Ferguson, Michael J. ^{[1
]}

McDonald, Robert ^{[1
]}

Rivard, Eric ^{[1
]}

机构：

[1] Univ Alberta, Dept Chem, Edmonton, AB T6G 2G2, Canada

来源：

INORGANIC CHEMISTRY | 2010年 / 49卷 / 20期

基金：

加拿大自然科学与工程研究理事会; 加拿大创新基金会;

关键词：

CRYSTAL-STRUCTURE; MAIN-GROUP; STRUCTURAL-CHARACTERIZATION; METAL-COMPLEXES; DOUBLE-BONDS; CHEMISTRY; REACTIVITY; SILICON; ACTIVATION; DINITROGEN;

D O I：

10.1021/ic101485a

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

A series of monomeric heterocyclic metallylenes [{(Pr2Si)-Pr-i(NR)(2)}M:] (M = Ge and Sn; R = Dipp = 2,6-(Pr2C6H3)-Pr-i or SiPh3) have been prepared. Preliminary atom-transfer chemistry involving the new low-valent germylenes with the chalcogen sources Me3NO and S-8 yielded the corresponding dimeric oxo- and sulfido complexes (e.g., [{(Pr2Si)-Pr-i(NDipp)(2)}Ge(mu-E)](2); E = 0 and S). Structural analyses of the metallylenes and their oxidized products reveal that incorporation of the umbrella-shaped triarylsilyl groups (SiPh3) within the NSiN chelate confers additional steric protection about the group 14 centers relative to a Dipp group. The inclusion of sterically modifiable -SiAr3 (Ar = aryl) units as part of a bis(amido) ligand array represents a new approach in this field and holds considerable promise with regard to attaining increasingly higher degrees of steric bulk,

引用

页码：9709 / 9717

页数：9

共 12 条

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