Spectroscopic, crystal structure and thermal studies of Co(II), Ni(II), Cu(II), Zn(II), Cd(II) and Hg(II) with 5-amino-4-arylazo-3-methyl-1-phenylpyrazole (aryl=C6H5,o-C6H4COOH,o-C6H4OH)

Autor:	M. F. Abo El-Ghar, N. T. Abd El-Ghani, O. M. El-Borady
Rok vydání:	2008
Předmět:	Denticity Chemistry Aryl Inorganic chemistry Crystal structure Pyrazole chemistry.chemical_compound Crystallography symbols.namesake Materials Chemistry symbols Chelation Physical and Theoretical Chemistry Thermal analysis Raman spectroscopy Single crystal
Zdroj:	Journal of Coordination Chemistry. 61:1184-1199
ISSN:	1029-0389 0095-8972
DOI:	10.1080/00958970701509032
Popis:	5-Amino-4-arylazo-3-methyl-1-phenylpyrazole (aryl = C6H5,o-C6H4COOH,o-C6H4OH) and its complexes with Co(II), Ni(II), Cu(II), Zn(II), Cd(II) and Hg(II) ions were synthesized. The complexes are in the ratio 1 : 1 and 1 : 2 (metal : ligand). Ligands and complexes were subjected to elemental analysis, IR, Raman, UV-Vis and 1H-NMR spectroscopy. The mass spectra of the ligands were discussed. Thermal analysis and magnetic measurements were carried out for the prepared complexes. The X-ray single crystal structure of [Ni(L1)2] was performed. The investigated pyrazole compounds coordinate as bidentate ligands through amino and azo nitrogens or tridentate through NNO. The molar conductance of the chelates is measured and reflected the non-electrolytic nature of the prepared complexes.
Databáze:	OpenAIRE
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