Dioximaţi ai Co(III) care conţin ionul tetrafluoroborat: sinteză, stuctură, proprietăţi [Articol]
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Universitatea de Stat din Moldova
Abstract
A fost realizată sinteza unei serii de dioximaţi ai cobaltului(III), în care, în afară de liganzii dioximici (metilglioxima – MH2, dimetilglioxima – DH2, difenilglioxima – DfH2, 1,2-ciclohexandiondioxima – NioxH2) la atomul central coordinează diferiţi liganzi organici (tiocarbamida, piridina, anilina, nicotinamida, sulfanilamida, orto-fenantrolina). În dependenţă de natura liganzilor axiali, are loc aranjarea spaţială specifică a moleculelor asamblate. Sarcina cationului complex este compensată de anionul tetrafluoroborat, care împreună cu moleculele de apă formează un sistem de legături de hidrogen. Unii reprezentanţi ai acestei serii manifestă proprietăţi biostimulatoare în procesele de enzimogeneză la unele tulpini de fungi.
The synthesis of a serie of cobalt(III) dioximates (methylglyoxime – MH2, dimethylglyoxime – DH2, diphenilglyoxime – DfH2, 1,2-ciclohexanedionedioxime – NioxH2) has been performed, which have some additional organic ligands (thiocarbamide, pyridine, aniline, nicotinamide, sulfanilamide, ortho-phenanthroline) coordinated to the central atom. It was proved that the specific spatial arrangement of the assembled molecules depends on the nature of the axial ligands. The charge of the cationic complex is compensated by the tetrafluoroborate anion, which forms a system of hydrogen bonds with the water molecules. Several representatives of this series are good biostimulators of enzymogenes processes of some fungal strains.
The synthesis of a serie of cobalt(III) dioximates (methylglyoxime – MH2, dimethylglyoxime – DH2, diphenilglyoxime – DfH2, 1,2-ciclohexanedionedioxime – NioxH2) has been performed, which have some additional organic ligands (thiocarbamide, pyridine, aniline, nicotinamide, sulfanilamide, ortho-phenanthroline) coordinated to the central atom. It was proved that the specific spatial arrangement of the assembled molecules depends on the nature of the axial ligands. The charge of the cationic complex is compensated by the tetrafluoroborate anion, which forms a system of hydrogen bonds with the water molecules. Several representatives of this series are good biostimulators of enzymogenes processes of some fungal strains.
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COROPCEANU, Eduard. Dioximaţi ai Co(III) care conţin ionul tetrafluoroborat: sinteză, stuctură, proprietăţi. Studia Universitatis Moldaviae. Seria Științe Reale și ale Naturii. 2014, nr. 1(71), pp. 135-141. ISSN 1814-3237. E-ISSN 1857-498X.