Synthesis and structure of mononuclear zinc complexes with pyridine-2-aldoxime
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COROPCEANU, Eduard, CROITOR, Lilia, DESYATNIK, A., TYURINA, Zh., DVORNINA, Elena, CODREANU, Constantin, FONARI, Marina. Synthesis and structure of mononuclear zinc complexes with pyridine-2-aldoxime. In: Russian Journal of Coordination Chemistry/Koordinatsionnaya Khimiya, 2017, vol. 43, pp. 278-285. ISSN -. DOI: https://doi.org/10.1134/S1070328417050025
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Russian Journal of Coordination Chemistry/Koordinatsionnaya Khimiya
Volumul 43 / 2017 / ISSN - /ISSNe 1070-3284

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

DOI:https://doi.org/10.1134/S1070328417050025

Pag. 278-285

Coropceanu Eduard12, Croitor Lilia3, Desyatnik A.4, Tyurina Zh.4, Dvornina Elena4, Codreanu Constantin2, Fonari Marina3
 
1 Institute of Chemistry of the Academy of Sciences of Moldova,
2 Tiraspol State University,
3 Institute of Applied Physics, Academy of Sciences of Moldova,
4 Institute of Microbiology and Biotechnology of the ASM
 
 
Disponibil în IBN: 21 februarie 2018


Rezumat

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.

Cuvinte-cheie
coordination compounds, crystal structure

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<title xml:lang='en'>Synthesis and structure of mononuclear zinc complexes with pyridine-2-aldoxime</title>
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<description xml:lang='en' descriptionType='Abstract'><p>Three mononuclear different-ligand Zn(II) complexes, [Zn(CH<sub>3</sub>COO)<sub>2</sub>(PaoH)<sub>2</sub>] (I), [Zn(PaoH)<sub>2</sub>(DMSO)<sub>2</sub>][BF<sub>4</sub>]<sub>2</sub> (II), and [Zn(NCS)<sub>2</sub>(PaoH)<sub>2</sub>] (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 P2<sub>1</sub>/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 N<sub>4</sub>O<sub>2</sub> sets of donor atoms in I and II and by N<sub>6</sub> in III. Complex I in the optimal concentration of 5&ndash;10 mg/L was found to stimulate the biosynthesis of standard (pH 4.7) amylases by the micromycete Aspergillus niger CNMN FD 06.</p></description>
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