Pyrazolato-bridged 1-D Co(II) coordination polymer and dinuclear Ni(II) and Cu(II) complexes: Syntheses, crystal structures and magnetic properties |
| |
| Authors: | Su-Yun Zhang Wu Li |
| |
| Institution: | a Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry and Chemical Engineering, Suzhou University, Suzhou 215123, China
b Qinghai Institute of Salt Lakes, Chinese Academy of Sciences, Xining 810008, China |
| |
| Abstract: | Three complexes of composition Co3(Hdcp)2(phen)3(H2O)2]n · nH2O (1), Ni2(Hdcp)2(H2O)4](Im)2 (2) and Cu2(Hpca)2(H2O)2(Im)2] (3) (H3dcp = 3,5-pyrazoledicarboxylic acid, H2pca = 1H-pyrazole-5-carboxylic acid, Im = imidazole and phen = 1,10-phenanthroline) have been synthesized via hydrothermal reactions and their structures have been characterized. Complex 1 is mainly constructed by Hdcp and ancillary ligand 1,10-phenanthroline and exhibits one-dimensional linear chain structure. Complexes 2 and 3 are pyrazolato-bridged dinuclear complexes. The ancillary imidazole ligand was not involved in the coordination and stacked to the lattice of the complex in 2. In the process of synthesis 3, imidazole ligand was coordinated to the metal centre; with one of the carboxylic group of the H3dcp ligand was eliminated to form Cu2(Hpca)2(H2O)2(Im)2] (3) in situ. The results of magnetic susceptibility measurements indicate that there exist antiferromagnetic interactions between Co(II) and Ni(II) centres in compounds 1 and 2, respectively. |
| |
| Keywords: | 1-D chain complex Dinuclear complexes Syntheses Structures Magnetic properties |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
