Department of Chemistry, University of Alberta, Edmonton, Canada.
Chemistry. 2012 Oct 22;18(43):13810-20. doi: 10.1002/chem.201202195. Epub 2012 Sep 17.
Various low oxidation state (+2) group 14 element amidohydride adducts, IPr⋅EH(BH(3))NHDipp (E=Si or Ge; IPr=[(HCNDipp)(2)C:], Dipp=2,6-iPr(2)C(6)H(3)), were synthesized. Thermolysis of the reported adducts was investigated as a potential route to Si- and Ge-based clusters; however, unexpected transmetallation chemistry occurred to yield the carbene-borane adduct, IPr⋅BH(2)NHDipp. When a solution of IPr⋅BH(2)NHDipp in toluene was heated to 100 °C, a rare C-N bond-activation/ring-expansion reaction involving the bound N-heterocyclic carbene donor (IPr) transpired.
各种低氧化态 (+2) 第 14 族元素酰胺氢化物加合物，IPr⋅EH(BH(3))NHDipp（E=Si 或 Ge；IPr=[(HCNDipp)(2)C:]，Dipp=2,6-iPr(2)C(6)H(3)），被合成。报道的加合物的热解被研究作为一种获得 Si 和 Ge 基团簇的潜在途径；然而，出乎意料的是，发生了转金属化学，生成了卡宾-硼烷加合物，IPr⋅BH(2)NHDipp。当 IPr⋅BH(2)NHDipp 在甲苯中的溶液加热至 100°C 时，发生了涉及键合的 N-杂环卡宾供体（IPr）的罕见 C-N 键活化/环扩展反应。
