Synthesis and structure of mononuclear zinc complexes with pyridine-2-aldoxime
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2018-11-07 08:50
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COROPCEANU, Eduard; CROITOR, Lilia; CILOCI (DESEATNIC), Alexandra; 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, nr. 5(43), pp. 278-285. ISSN -.
10.1134/S1070328417050025
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Russian Journal of Coordination Chemistry/Koordinatsionnaya Khimiya
Numărul 5(43) / 2017 / ISSN - /ISSNe 1070-3284

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


DOI: 10.1134/S1070328417050025
Pag. 278-285

Coropceanu Eduard12, Croitor Lilia3, Ciloci (Deseatnic) Alexandra4, Tyurina Zh.4, Dvornina Elena4, Codreanu Constantin2, Fonari Marina3
 
1 Institute of Chemistry of the Academy of Sciences of Moldova,
2 Moldova 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
amylolytic activity, pyridine-2-aldoxime, stimulation of biosynthesis, zinc cation,

coordination compounds, crystal structure