title: Hydrothermal synthesis, crystal structure and properties of Ni(II)-4f complexes based on 1H-benzimidazole-5,6-dicarboxylic acid.
abstract: Nine novel heterometallic coordination polymers [Ln(2)Ni(Hbidc)(2)(SO(4))(2)(H(2)O)(8)](n) (Ln = Pr (1), Sm (2), Eu (3), Gd (4), Tb (5), Dy (6), Ho (7), Er (8), Yb (9), H(3)bidc = 1H-benzimidazole-5,6-dicarboxylic acid) have been synthesized under hydrothermal conditions and characterized by elemental analysis, FT-IR, TG analysis and single crystal X-ray diffraction. X-ray analysis revealed that all complexes present almost identical three-dimensional (3D) structures with PtS-type topology. Complexes 1-7 are all isomorphous, and the structure variation of polymers 8 and 9 is induced by the lanthanide contraction effect. In additional, the luminescence properties of complexes 2, 3 and 5-7, and the magnetic properties of complexes 4 and 6-8 were investigated.
authors.affiliation: Laboratory of Coordination Chemistry, Shenyang University of Chemical Technology, Shenyang 110142, China. yaguangsun@yahoo.com.cn
authors.forename: Ya-Guang
authors.initials: YG
authors.lastname: Sun
authors.forename: Gang
authors.initials: G
authors.lastname: Xiong
authors.forename: Mei-Yan
authors.initials: MY
authors.lastname: Guo
authors.forename: Fu
authors.initials: F
authors.lastname: Ding
authors.forename: Shu-Ju
authors.initials: SJ
authors.lastname: Wang
authors.forename: Philippe F
authors.initials: PF
authors.lastname: Smet
authors.forename: Dirk
authors.initials: D
authors.lastname: Poelman
authors.forename: En-Jun
authors.initials: EJ
authors.lastname: Gao
authors.forename: Francis
authors.initials: F
authors.lastname: Verpoort