Substituted group-directed assembly of six coordination compounds based on pyrazole bifunctional ligands |
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| Authors: | Lei Shen Qian-Qian Ma Qing Liu Tian-Tian Jia Yue Xu Ting Zhu Dun-Ru Zhu Jie Yang |
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| Institution: | 1.Department of Chemistry and Materials Engineering, Jiangsu Key Laboratory of Advanced Functional Materials,Changshu Institute of Technology,Changshu,People’s Republic of China;2.College of Chemical Engineering, State Key Laboratory of Materials-oriented Chemical Engineering,Nanjing Tech University,Nanjing,People’s Republic of China |
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| Abstract: | Six new complexes Mn8(μ4-O)4(phpz)8(MeOH)4]·(MeOH)(H2O) (1) Co2(HphpzH)(Hphpz)2(phpz)2]·4(MeOH) (2), Ni(Hphpz)2 (3), Ni(Hphpz)2]·H2O (4), Zn4(pzpy)4Cl4] (5) and Cu2(pzpy)2(HCO2)2(H2O)2] (6) have been synthesized by hydrothermal reactions of MCl2·4H2O (M = Mn, Co, Ni, Zn or Cu) with 5-(2-hydroxyphenyl)-3-pyrazole (HphpzH) or 2-(1H-pyrazol-3-yl)pyridine (Hpzpy). The complexes were characterized by elemental analysis, IR spectroscopy and single-crystal X-ray diffraction. Complex 1 is an octanuclear Mn(III) cluster, complexes 2 and 6 are binuclear Co(III) and Cu(II), respectively, complexes 3 and 4 are isomorphous mononuclear species, while complex 5 is a tetranuclear Zn(II) cluster. The magnetic behavior of complex 1 was investigated. Magnetic susceptibility measurements revealed antiferromagnetic exchange interactions between the metal centers in the clusters. The luminescence properties of the complexes were investigated at room temperature in the solid state. |
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