Synthesis and characterization of a large heterometallic alkoxide cation: Self-assembly and rational route to
作者:Giovana G. Nunes、Vadim G. Kessler
DOI:10.1016/j.inoche.2006.03.029
日期:2006.7
considered as a fragment of hexagonal packing of metal and ligand atoms completed by 6 (3 + 3) terminal alkoxide ligands at the tantalum and 4 (2 + 2) terminal acetonitrile molecules at the cobalt atoms that are bearing the (+1) positive charge each. A rational synthesis of this compound was achieved by reaction between [NaTa(OMe)6] with four equivalents of CoCl2 in toluene/acetonitrile to give a new crystallographic
摘要 离子或离子醇盐是聚合反应的有吸引力的潜在催化剂。CoCl2 和 [Ta(OMe)5] 之间的直接相互作用通过自组装产生少量离子聚集体与乙腈的包合物 [Co 2 Ta 2 ( OMe ) 12 ( MeCN ) 4 ] 2 + [ CoCl 3 ( MeCN ) )] 2 - · 2 MeCN (1)。1 的结构包含一个平面 M4(μ3-OR)2(μ-OR)4-核,可以被认为是金属和配体原子的六边形堆积的片段,由 6 个 (3 + 3) 末端醇盐配体完成钽和 4 (2 + 2) 个末端乙腈分子位于钴原子上,每个分子都带有 (+1) 正电荷。