Synthesis, spectral and thermal studies of Mn(II), Co(II), Ni(II), Cu(II) and Zn(II) complex dyes based on hydroxyquinoline moiety

Autor:	N. F. Mohamed, Mohamed Gaber, Mohamed A. El-Borai, G. B. El-Hefnawy
Rok vydání:	2011
Předmět:	Denticity Dibasic acid Chemistry Monobasic acid Inorganic chemistry Quinoline Infrared spectroscopy Condensed Matter Physics Metal chemistry.chemical_compound Crystallography visual_art visual_art.visual_art_medium Moiety Chelation Physical and Theoretical Chemistry
Zdroj:	Journal of Thermal Analysis and Calorimetry. 109:1397-1405
ISSN:	1572-8943 1388-6150
DOI:	10.1007/s10973-011-1911-0
Popis:	A series of Mn(II), Co(II), Ni(II), Cu(II) and Zn(II) complexes of azo-compounds containing hydroxyl quinoline moiety have been synthesized and characterized by elemental analysis, molar conductance, magnetic moments, IR, electronic and ESR spectral studies. The results revealed the formation of 1:1 and 1:2 (L:M) com- plexes. The molar conductance data reveal that the chelates are nonelectrolyte. IR spectra indicate that the azodyes behave as monobasic bidentate or dibasic tetradentate ligands through phenolate or carboxy oxygen, azo N for 1:1 (L:M) complexes beside phenolate oxygen and quinoline N atoms for 1:2 (L:M) complexes. The thermal analyses (TG and DTA) as well as the solid electrical conductivity measurements are also studied. The molecular parameters of the ligands and their metal complexes have been calculated.
Databáze:	OpenAIRE
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