Synthesis, crystal structure and magnetic properties of a novel complex Ni(NIT2-thz)3(ClO4)2
摘要:
A novel Ni(II)-nitronyl nitroxide-substituted thiazole complex, Ni(NIT2-thz)(3)(ClO4)(2) (NIT2-thz = 2-(2'-thiazole)-4,4,5,5-tetramethylimidazoline-1-oxyl-3-oxide) was synthesized and characterized structurally and magnetically. It crystallizes in the monoclinic space group P2(1)c. The metal coordination sphere is fully occupied by three chelating nitroxide ligands, showing a distorted octahedral geometry. The complex molecules were connected as 1-D chain structure by the intermolecular interaction. Magnetic studies show that antiferromagnetic couplings occurred between the nickel(H) ion and the organic radicals, and ferromagnetic between the adjacent molecules. (C) 2004 Elsevier B.V. All rights reserved.