1-Phenyl-3-(pyrid-2-yl)benzo[e][1,2,4]triazinyl: The First “Blatter Radical” for Coordination Chemistry

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• 作者：Ian S. Morgan ; Anssi Peuronen ; Mikko M. H?nninen ; Robert W. Reed ; Rodolphe Clérac ; Heikki M. Tuononen
• 刊名：Inorganic Chemistry
• 出版年：2014
• 出版时间：January 6, 2014
• 年：2014
• 卷：53
• 期：1
• 页码：33-35
• 全文大小：221K
• ISSN：1520-510X

文摘

A neutral air- and moisture-stable N,N鈥?chelating radical ligand, 1-phenyl-3-(pyrid-2-yl)benzo[e][1,2,4]triazinyl (1) was synthesized and characterized by electron paramagnetic resonance spectroscopy, X-ray crystallography, and magnetic measurements. Subsequent reaction of 1 with Cu(hfac)₂路2H₂O (hfac = hexafluoroacetylacetonate) under ambient conditions afforded the coordination complex Cu(1)(hfac)₂ in which the radical binds to the metal in a bidentate fashion. Magnetic susceptibility data collected from 1.8 to 300 K indicate a strong ferromagnetic metal-radical interaction in the complex and weak antiferromagnetic radical路路路radical interactions between the Cu(1)(hfac)₂ units. Detailed computational investigations support this assignment. Radical 1 is a new addition to the growing library of 1,2,4-triazinyl radicals and the first member of this family of paramagnetic species synthesized specifically for coordination purposes.