Ferromagnetic dinuclear nickel(II) complexes bridged by azide ions

摘要

Dinuclear nickel(II) complexes, [Ni-2(mpapOH)(2)(CH3CO2)(N-3)(3)] (1) and [Ni-2(mpapOH)(2)(N-3)(4)]center dot CH3OH (2) were synthesized by treating Ni(CH3CO2)(2)center dot 4H(2)O and Ni(NO3)(2)center dot 6H(2)O in methanol, respectively, with mpapOH (= 2-methyl-2-[(2-pyridinylmethyl)amino]-1-propanol) and sodium azide; both 1 and 2 were characterized by elemental analysis, IR spectroscopy, X-ray diffraction, and magnetic susceptibility measurement.) was shown an asymmetric dinuclear structure, whereas 2 was displayed a symmetric dimeric one. 1 and 2 were exhibited end-on azido-bridged nickel(II) dinuclear units; corresponding ferromagnetic interactions through the bridged end-on azido ligands within the dimeric units were observed. (C) 2017 Elsevier B.V. All rights reserved.