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Synthesis and structure of mononuclear zinc complexes with pyridine-2-aldoxime

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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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Correspondence to E. B. Coropceanu.

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Original Russian Text © E.B. Coropceanu, L. Croitor, A.A. Ciloci, Zh.P. Tyurina, E.G. Dvornina, C.Z. Codreanu, M.S. Fonari, 2017, published in Koordinatsionnaya Khimiya, 2017, Vol. 43, No. 5, pp. 268–274.

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Coropceanu, E.B., Croitor, L., Ciloci, A.A. et al. Synthesis and structure of mononuclear zinc complexes with pyridine-2-aldoxime. Russ J Coord Chem 43, 278–285 (2017). https://doi.org/10.1134/S1070328417050025

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