Synthesis,crystal structures and urease inhibitory activity of copper(II) complexes with Schiff bases |
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| Authors: | Zhong-Lu You Lin Zhang Da-Hua Shi Xiao-Ling Wang Xiao-Fang Li Yu-Ping Ma |
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| Affiliation: | 1. Department of Chemistry and Chemical Engineering, Liaoning Normal University, Dalian 116029, PR China;2. School of Chemical Engineering, Huaihai Institute of Technology, Lianyungang, Jiangsu 222005, PR China;3. Institute of Chemistry for Functionalized Materials, Liaoning Normal University, Dalian 116029, PR China |
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| Abstract: | Two thiocyanate-coordinated Schiff base copper(II) complexes, CuL1(NCS)] (1) and Cu2(L1)2(μ1,3-NCS)2]n (2), where L1 and L2 are the deprotonated forms of 4-bromo-2-(2-propylaminoethylimino)methyl]phenol (HL1) and 2-ethoxy-6-(2-propylaminoethylimino)methyl]phenol (HL2), respectively, have been prepared and structurally characterized. Single crystal X-ray diffraction indicates that 1 is a mononuclear copper(II) complex, while in 2, the adjacent two complex molecules are linked through two phenolate O atoms, forming a dimer. The dimers in 2 are further weakly linked through end-to-end thiocyanate bridges to form a two-dimensional sheet. The Cu atom in 1 is four-coordinate in a square planar geometry, and that in 2 is six-coordinate in an octahedral geometry. Complex 1 shows strong urease inhibitory activity, while complex 2 shows no activity. |
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