A monomeric, heterobimetallic complex with an unsupported Mg-Fe bond
A monomeric, heterobimetallic complex with an unsupported Mg-Fe bond
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DOI：
10.1016/j.ica.2016.12.029
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发表时间：
2017-03-24
影响因子：
2.8
通讯作者：
Kays, Deborah L.
中科院分区：
文献类型：
--
作者：
Birchall, Christopher;Moxey, Graeme J.;Kays, Deborah L.
膦亚胺，三甲基甲硅烷基取代的BIPM配体[BIPM =双（亚氨基磷酰）甲烷]已被用于稳定CH（Ph 2 PNSiMe 3）（2）MgFe（eta（5）-C5 H5）（CO）（2）（1），其是在碱土金属和过渡金属之间表现出直接的、未被支撑的键的结构经验证的络合物。FTIR测量的羰基伸缩频率为这个复杂的建议，有一个极化的电荷从过渡金属片段的镁中心。通过DFT计算证实了1中存在极性金属-金属键，这表明Mg-Fe键本质上主要是离子键。(C)2017爱思唯尔B. V.保留所有权利。
The phosphinimine, trimethylsilyl-substituted BIPM ligand [BIPM = bis(iminophosphorano)methanide] has been used to stabilise CH(Ph2PNSiMe3)(2)MgFe(eta(5)-C5H5)(CO)(2) (1), which is a structurally authenticated complex exhibiting a direct, unsupported bond between an alkaline earth metal and a transition metal. The FTIR-measured carbonyl stretching frequencies for this complex suggest that there is a polarisation of charge from the transition metal fragment to the magnesium centre. The presence of a polar metal-metal bond in 1 is confirmed by DFT calculations, which suggest that the Mg-Fe bond is predominantly ionic in nature. (C) 2017 Elsevier B.V. All rights reserved.