SYNTHESIS AND SPECTROSCOPIC CHARACTERIZATION OF OXALYL BIS(DIACETYLMONOXIME HYDRAZONE) METAL COMPLEXES
Abouhussien, Azza; Nashwa M. El-Metwally; Ahmed A. El-Asmy;
Abstract
Binuclear complexes of VO2+, Co2+, Ni2+, Cu2+ and Zn2+ with oxalyl bis(diacetylmonoxime hydrazone), H4ODMH, have been prepared. Elemental analysis, spectral studies (IR, U.V-Vis., 1H NMR, ESR, MS) and magnetic measurements were proved the structure of the formed chelates. The data of elemental analysis suggest a 2:2 (M:L) molar ratio. H4ODMH behaves as a dibasic tetradentate ligand in all the studied complexes. The electronic and magnetic moments reveal an octahedral geometry for the VO2+ complex, tetrahedral for the Zn(II) and square-planar for the rest. The anomalous moment for the VO2+ complex is taken as strong evidence for the metal-metal bond. The ESR spectra of the Cu(II) complex, in powder and DMF solution, reveal a square-planar geometry. The in vitro antimicrobial activity of the investigated compounds reveal a higher activity of H4ODMH than its complexes.
Other data
| Title | SYNTHESIS AND SPECTROSCOPIC CHARACTERIZATION OF OXALYL BIS(DIACETYLMONOXIME HYDRAZONE) METAL COMPLEXES | Authors | Abouhussien, Azza ; Nashwa M. El-Metwally; Ahmed A. El-Asmy | Issue Date | 2006 | Publisher | Journal of Pure and Applied Chemistry | Journal | Journal of Pure and Applied Chemistry | Volume | 1 | Issue | 1 | Start page | 75 | End page | 81 |
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