Synthesis and antimicrobial activity of coordination compounds of 3d-elements with Schiff bases obtained from 5-nitrofurfurol and some sulfanilamides

Autor: V. I. Tsapkov, N. M. Samus, Nauzat Al'-Nabgali, É. N. Shlyakhov, T. A. Burdenko, V. V. Stan
Rok vydání: 1991
Předmět:
Zdroj: Pharmaceutical Chemistry Journal. 25:189-192
ISSN: 1573-9031
0091-150X
DOI: 10.1007/bf00772020
Popis: The analysis of the IR spectra of (VIII)-(XIX) was performed to explain the means of the coordination of the ligands with the central ions; this showed that the SBs obtained on a matrix of the Co 2+, Ni 2+, Cu 2+, or Zn 2+ ions behave as bidentate ligands being coordinated with the metal ions via the oxygen of the sulfoxide group and the pyrimidine (V) or thiazole (VI), (VII) nitrogen with the formation of the six-membered metal-containing ring. This is supported by the splitting into two components and the shift into the low-frequency region, by 50-20 cm -I, of the absorption bands of the stretching and deformation vibrations of these bonds, as well as the appearance of the absorption bands of the stretching vibrations of the metal-nitrogen and metal-oxygen bonds in the region of 530-405 cm -~ The participation of other functional groups in the coordination with the metal ions is excluded since their characteristic frequencies are virtually unchanged by comparison with the SBs (V)-(VII)o
Databáze: OpenAIRE
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