摘要:
Six new coordination polymers, [Co(NiL)(aipt)] (1), [CO2(ML)(hipt)(2)(CH3OH)(H2O)]center dot CH3OH (M=Cu (2), Ni (3)), [CO2(C2O4)(2)(CuL)(2)] (4), [Co-4(NiL)(4)(ipt)(4)(H2O)(2]) (5) and [Co(CuL)(tpt)1 (6) (H2L=2,3-dioxo-5,6,14,15-dibenzo-1,4,8,12-tetraazacyclo-pentadeca-7,13-dien; H(2)aipt=5-aminoisophthalic acid; H(2)hipt=5-hydroxyisophthalic acid; H(2)ipt=isophthalic acid; H(2)tpt=terephthalic acid), have been synthesized by a solvothermal method and characterized by single-crystal X-ray diffraction. Complexes 1, 4 and 5 exhibit different infinite chain structures formed by CoNi (1), Co2Cu2 (4), Co4Ni4 (5) units, respectively, via oxamide and diverse carboxylate bridges, while complexes 2, 3 and 6 exhibit different two-dimensional network structures formed by CO2M or CO2M2 units via oxamide and 5-hydroxyisophthalate or terephthalate bridges. The results of magnetic determination show weak antiferromagnetic interactions in 1-3 and 5-6, and the spin-orbit coupling interaction of Co(II) is a primary factor in the magnetic behaviors. (C) 2014 Elsevier Ltd. All rights reserved.