Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati, 781039, Assam, India.
Chem Commun (Camb). 2021 Feb 7;57(11):1352-1355. doi: 10.1039/d0cc07378d. Epub 2021 Jan 12.
An elusive aminyl radical and an iminosemiquinone radical-coordinated square pyramidal Cu(ii) complex (1) have been isolated by the reaction between the noninnocent ligand HL and Cu(ClO)·6HO in the presence of EtN and air as the sole oxidant. The geometry and electronic structure of the complex were concluded by X-ray crystallography, magnetic and EPR measurements, and density functional theory (DFT) calculations. This work reports the first crystallographic example of the two different types of radicals co-existing in a stable complex.
通过 HL 配体与 Cu(ClO)·6HO 在 EtN 和空气（唯一氧化剂）存在下的反应，分离得到了一个难以捉摸的氨自由基和亚氨基半醌自由基配位的四面体形 Cu(ii)配合物（1）。通过 X 射线晶体学、磁性和 EPR 测量以及密度泛函理论（DFT）计算得出了配合物的几何形状和电子结构。这项工作报道了首例两种不同类型的自由基在一个稳定配合物中共存的晶体学实例。
