Mukherjee Rabindranath
Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur 208 016, India.
Inorg Chem. 2020 Sep 21;59(18):12961-12977. doi: 10.1021/acs.inorgchem.0c00240. Epub 2020 Sep 3.
The purpose of this Viewpoint is to provide a broad-ranging update of advances in the coordination chemistry of redox-active (noninnocent) 2-aminophenolates, with emphasis on two ligand backbone structural parameters, the average of C-O and C-N (C-O/N) bond distances and Δ values, signifying the degree of bond-length alternation in the six-membered ring, in order to identify the redox level of the coordinated ligands. In the absence of magnetic, spectroscopic, and redox results, it has been established that it is possible to assign the electronic ground state of a coordination complex of 2-aminophenolates with consideration of charge, metal-ligand bond distances, and two very promising ligand backbone structural parameters. From a closer look at the sensitive ligand backbone metrical parameters of a diversified group of about 120 transition-metal complexes, a few very useful generalizations have been made.
本观点文章的目的是全面更新氧化还原活性（非中性）2-氨基酚盐配位化学的进展，重点关注两个配体主链结构参数，即C-O和C-N（C-O/N）键距的平均值以及Δ值，Δ值表示六元环中键长交替的程度，以便确定配位配体的氧化还原水平。在缺乏磁性、光谱和氧化还原结果的情况下，已确定在考虑电荷、金属-配体键距以及两个非常有前景的配体主链结构参数的情况下，可以确定2-氨基酚盐配位络合物的电子基态。通过仔细研究约120种过渡金属络合物的多样化基团的敏感配体主链测量参数，得出了一些非常有用的一般规律。
