Synthesis, structure and magnetic behavior of a novel 1-D chain tethered by nickel (II)-4-pyridyl-substituted nitronyl nitroxide radical complex and TCB

摘要

A novel one-dimensional nickel (II) complex incorporating a nitroxide radical with the formula {[Ni(NITpPy)_2(TCB)(H_2O)_2]·2H_2O}_n (NITpPy = 2-(4'-pyridyl)-4,4,5,5-tetramethyl-imidazoline-1-oxyl-3-oxide and TCB = 1,4-dicarboxy-2,5-dicarboxylatobenzene dianion) has been synthesized and characterized. Theoretical analysis of the variable-temperature magnetic susceptibility data of the complex reveals that there are two kinds of antiferromagnetic intrachain interactions.