Structures and magnetic properties of catena-(μ-MO4-O,O′)[Ni(II)(L)]·5H2O (M=Cr, Mo; L=3,10-bis(2-hydroxyethyl)-1,3,5,8,10,12-hexaazacyclotetradecane)
作者:Ju Chang Kim、Alan J. Lough、James C. Fettinger、Ki-Young Choi、Don Kim、Sang-Yong Pyun、Jaeheung Cho
DOI:10.1016/s0020-1693(99)00525-3
日期:2000.5
The new compounds catena-(mu-CrO4-O,O')Ni(II)(L)] . 5H(2)O and catena-(mu-MoO4-O,O')[Ni(II)(L). 5H(2)O where L is 3,10-bis(2-hydroxyethyl)-1,3,5,8,10,12-hexaazacyclotetradecane, have been synthesized and structurally characterized by spectroscopy, magnetic susceptibility and X-ray crystallography. The nickel ions of the one-dimensional chain complexes are bridged by the tetraoxometalate ([CrO4](2-) or [MoO4](2-)) unit. The magnetic properties of the chain complexes in the temperature range 5-300 K indicate that there are weak ferromagnetic intrachain interactions among the nickel ions. The electronic as well as infrared spectral properties of the title complexes are also reported and discussed. (C) 2000 Elsevier Science S.A. All rights reserved.