Synthesis, Crystal Structures, and Magnetic Properties of Cobalt(II)-Hexafluoro-Acetylacetonate Complexes with Two New Triazole-Substituted Nitronyl and Imino Nitroxide

摘要

Two new chelating radical ligands, NITphtrz (4,4,5,5-tetramethyl-2-(2-phenyl-1,2,3-triazole-4-yl)imidazoline-1-oxyl-3-oxide) and IMphtrz (4,4,5,5-tetramethyl-2-(2-phenyl-1,2,3-triazole-4-yl)imidazo-line-1-oxyl), and their cobalt(II) complexes [Co(Hfae)_2(NITphtrz)] (I) and [Co(Hfac)_2(IMphtrz)] (II) (Hfac = hexafluoroacetylacetonate) have been prepared and characterized by IR, magnetic, and single-crystal X-ray analysis. The magnetic behaviors of the lignad NITphtrz and complex I have been discussed.