Coordination Complexes of a Neutral 1,2,4-Benzotriazinyl Radical Ligand: Synthesis, Molecular and Electronic Structures, and Magnetic Properties
作者:Ian S. Morgan、Akseli Mansikkamäki、Georgia A. Zissimou、Panayiotis A. Koutentis、Mathieu Rouzières、Rodolphe Clérac、Heikki M. Tuononen
DOI:10.1002/chem.201501343
日期:2015.10.26
measurements, and electronic structure calculations. The complexes [Mn(1)(hfac)2] and [Fe(1)(hfac)2] displayed antiferromagnetic coupling between the unpaired electrons of the ligand and the metal cation, whereas the interaction was found to be ferromagnetic in the analogous NiII complex [Ni(1)(hfac)2]. The magnetic properties of the complex [Co(1)(hfac)2] were difficult to interpret owing to significant
最近报道的配位中性自由基配体1-3苯基-3-(吡啶-2-基)-1,4-二氢-1,2-,4-苯并三嗪-4-基的一系列d嵌段金属配合物(1)是合成的。所研究的系统包含与二价金属阳离子Mn II,Fe II,Co II或Ni II配位的苯并三嗪基自由基1,其中1,1,1,5,5,5,5-六氟乙酰丙酮丙酮(hfac)作为该化合物的辅助配体选择。合成的复合物通过单晶X射线衍射,磁化率测量和电子结构计算得到了充分表征。配合物[Mn(1)(hfac)2 ]和[Fe(1)(hfac)2 ]显示配体和金属阳离子的未成对电子之间的反铁磁耦合,而在类似的Ni II配合物[Ni(1)(hfac)2 ]中发现相互作用是铁磁的。复杂[Co(1)(hfac)2 ]的磁特性由于八面体高自旋Co II金属离子固有的自旋轨道耦合而难以解释。总体而言,所报告的数据清楚地表明了基团1的有利配位性能。,以及其稳定性和结构可调性,使