Synthesis and structure of mononuclear zinc complexes with pyridine-2-aldoxime |
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| Authors: | Email author" target="_blank">E?B?CoropceanuEmail author L?Croitor A?A?Ciloci Zh?P?Tyurina E?G?Dvornina C?Z?Codreanu M?S?Fonari |
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| Institution: | 1.Institute of Chemistry,Academy of Sciences of Moldova,Chisinau,Moldova;2.Tiraspol State University,Chisinau,Moldova;3.Institute of Applied Physics,Academy of Sciences of Moldova,Chisinau,Moldova;4.Institute of Microbiology and Biotechnology,Academy of Sciences of Moldova,Chisinau,Moldova |
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| Abstract: | Three mononuclear different-ligand Zn(II) complexes, Zn(CH3COO)2(PaoH)2] (I), Zn(PaoH)2(DMSO)2]BF4]2 (II), and Zn(NCS)2(PaoH)2] (III) (DMSO = dimethylsulfoxide) were prepared by the reaction of zinc acetate and tetrafluoroborate with pyridine-2-aldoxime (PaoH). The composition and structure of the complexes were confirmed by IR spectroscopy and X-ray diffraction. All compounds crystallize in the monoclinic system, compounds I and II have space group P21/n, while compound III has space group C2/c. In all compounds, the Zn coordination polyhedron is a distorted octahedron, which is formed by the N4O2 sets of donor atoms in I and II and by N6 in III. Complex I in the optimal concentration of 5–10 mg/L was found to stimulate the biosynthesis of standard (pH 4.7) amylases by the micromycete Aspergillus niger CNMN FD 06. |
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