Silane-Functionalized N-Heterocyclic Carbene-Cobalt Complexes Containing a Five-Coordinate Silicon with a Covalent Co-Si Bond
Silane-Functionalized N-Heterocyclic Carbene-Cobalt Complexes Containing a Five-Coordinate Silicon with a Covalent Co-Si Bond
复制标题
含有具有共价 Co-Si 键的五配位硅的硅烷官能化 N-杂环卡宾-钴络合物
DOI：
10.1021/acs.organomet.5b00114
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发表时间：
2015
期刊：
影响因子：
--
通讯作者：
Liang Deng*
中科院分区：
文献类型：
--
作者：
Jian Sun;Chong Ou;Chao Wang,* Masanobu Uchiyama;Liang Deng*
通过双齿硅氢基-N-杂环卡宾(NHC)担载的钴(II)配合物与2-吡啶酮的反应，合成了具有五配位硅中心、共价Co-Si键的新型钴配合物[(SiN_2C)Co(OPy)](SiN_2C=四齿硅烷锚定的双(吡啶)-N-杂环卡宾(NHC)配体，OPy=2-吡啶酮)，其结构经1H，13C，29Si核磁共振，单晶X-射线衍射和元素分析表征。理论计算支持Co-Si相互作用的共价性质，而不是金属硅烷中的金属→-Si配位键。
Novel cobalt complexes featuring five-coordinate silicon centers with a covalent Co–Si bond, i.e., [(SiN2C)Co(OPy)] complexes (SiN2C = tetradentate silane-anchored bis(pyridine)-N-heterocyclic carbene (NHC) ligand, OPy = 2-pyridonato), were prepared by reaction of bidentate hydrosilyl-NHC-supported cobalt(II) complexes with 2-pyridone and characterized by1H,13C, and29Si NMR, single-crystal X-ray diffraction, and elemental analyses. Theoretical calculations support a covalent nature of the Co–Si interaction, in contrast to the metal→Si dative bonds in metallasilatranes.