期刊
INORGANICA CHIMICA ACTA
卷 365, 期 1, 页码 167-176出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.ica.2010.09.001
关键词
Cadmium polymers; Triazole-based ligands; Crystal structures; Luminescence
资金
- National Natural Science Foundation of China [20971110, 91022013]
- Outstanding Talents Foundation by the He'nan province
- [NCET-07-0765]
Six novel Cd(II) coordination polymers based on 4,4'-bis(1,2,4-triazol-1-ylmethyl) biphenyl (btmb), namely, [Cd(btmb)(2)I-2](n) (1), [Cd(btmb)I-2](n) (2), {[Cd(btmb)(2)(NO3)(2)]center dot H2O}(n) (3), {[Cd(btmb)(2)(SCN)(2)]center dot 3H(2)O}(n) (4), {[Cd(btmb)(CH3COO)(2)(H2O)]center dot CH3CN}(n) (5) and [Cd(btmb)Cl-2(H2O)](n) (6) have been synthesized by the reactions of btmb with Cd(II) salts in the presence of different anions (I, NO3-, NCS , CH3COO or Cl ) under appropriate reaction conditions. The assemblies of btmb with CdI2 afford two different structures: two-dimensional (2D) rhombohedral grid layer network structure 1 and 2D layer structure 2 involved with one-dimensional (1D) linear cadmium chains. Treatment of btmb with Cd(NO3)(2)center dot 4H(2)O gives rise to a 2D grid network structure 3 which is similar to 1. When the I or NO3 anions were replaced by NCS , CH3COO or Cl , different 1D coordination polymers 4-6 were obtained, respectively. Polymer 4 displays a 1D double-chain structure, while both polymers 5 and 6 show 1D zigzag chain structures. In addition, the luminescence measurements reveal that polymers 1-6 exhibit different fluorescent emissions in the solid-state at room temperature, which can be attributed to the various coordination environments of Cd(II), solvent molecules and different packing interactions in these polymers. (C) 2010 Elsevier B.V. All rights reserved.
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