Synthesis, crystal structures and properties of the novel mononuclear copper(II) and tetranuclear cobalt(II) complexes with 3,6-bis-(3,5-dimethylpyrazolyl)-pyridazine |
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Authors: | Hong Gao Zhi-Hui Zhang Ping Jiang Xiu-Rong Li |
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Institution: | (1) Department of Chemistry, Nankai University, Tianjin, 300071, P.R. China |
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Abstract: | A novel monomer copper(II) complex Cu(L)2(SCN)] · ClO4
(1) and a tetranuclear cobalt(II) complex Co4(L)4(N3)4](OH)4 · 2H2O (2)(L = 3,6-bis-(3,5-dimethylpyrazolyl)-pyridazine) have been synthesized and structurally characterized. Single crystal X-ray analyses show
that the Cu(II) atom is in a distorted trigonal bipyramidal coordinated environment consisting of four N atoms of L and one
N atom of SCN− in complex (1), and the monomer is extended to a 1D chain by the weak intermolecular π...π stacking interactions. In the complex (2), four Co(II) atoms are linked by four bridging azido groups in μ-1,1-N3 (end-on) coordination mode to form a tetranuclear configuration. The fungicidal activity of the title compounds have been
studied, and the results show that there are certain activities against several bacteria for the complexes and the ligand.
Furthermore, two complexes exhibit blue emission fluoresce in the solid state at room temperature. |
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