Isolation and Characterization of a Homoleptic Tetramethylcobalt(III) Distorted Square-Planar Complex
Isolation and Characterization of a Homoleptic Tetramethylcobalt(III) Distorted Square-Planar Complex
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DOI：
10.1021/acs.organomet.9b00387
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发表时间：
2019-09
期刊：
影响因子：
2.8
通讯作者：
S. Carpenter;W. Brennessel;M. Neidig
中科院分区：
文献类型：
--
作者：
S. Carpenter;W. Brennessel;M. Neidig
均配型钴烷基和芳基配合物是极其罕见的，主要限于利用庞大的，稳定的配体的配合物。迄今为止，还没有报道具有简单的、空间上不受阻碍的烷基配体（如甲基）的均配型钴物种。在这里，我们报告的合成和表征的均配，扭曲的正方形平面四甲基钴（III）配合物[Mg（acac）（NMP）4][CoMe 4]（NMP = N-甲基吡咯烷酮），它具有极端的温度和湿度的敏感性。核磁共振和密度泛函理论为该复合物的电子结构和成键提供了详细的见解。
Homoleptic cobalt alkyl and aryl complexes are extremely rare, limited predominantly to complexes utilizing bulky, stabilizing ligands. There have been no reports to date of homoleptic cobalt species with simple, sterically unencumbered alkyl ligands, such as methyl. Herein, we report the synthesis and characterization of the homoleptic, distorted square-planar tetramethylcobalt(III) complex [Mg(acac)(NMP)4][CoMe4] (NMP = N-methylpyrrolidone), which exhibits extreme temperature and moisture sensitivities. NMR and density functional theory provide detailed insight into the electronic structure and bonding in this complex.