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Synthesis, Spectral, Thermal and Biological Studies of Mn(II), Co(II), Ni(II) and Cu(II) Complexes with 1‐(((5‐Mercapto‐1 H ‐1,2,4‐triazol‐3‐yl)imino)‐methyl)naphthalene‐2‐ol
Author(s) -
Issa Raafat Mostafa,
Gaber Mohammed,
AlWakiel Nadia AbdElhamed,
Fathalla Shaimaa Kamal
Publication year - 2012
Publication title -
chinese journal of chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.28
H-Index - 41
eISSN - 1614-7065
pISSN - 1001-604X
DOI - 10.1002/cjoc.201280004
Subject(s) - chemistry , molar conductivity , electron paramagnetic resonance , crystallography , ligand (biochemistry) , schiff base , molecule , magnetic moment , octahedral molecular geometry , octahedron , imine , thermogravimetric analysis , tetrahedral molecular geometry , metal , magnetic susceptibility , inorganic chemistry , elemental analysis , nuclear magnetic resonance , crystal structure , organic chemistry , biochemistry , physics , receptor , condensed matter physics , catalysis
Mn(II), Co(II), Ni(II) and Cu(II) complexes of 5‐mercapto‐1,2,4‐triazol‐3‐imine‐2′‐hydroxynaphthaline have been synthesized and characterized by elemental analysis, IR, 1 H NMR, EI‐mass, UV‐Vis, and ESR (electron spin resonance) spectra, molar conductance, magnetic moment measurements, DC conductivity and thermogravimetric analysis. IR spectra confirm that the ligand molecule existed in both thione and thiole forms. The molar conductance values indicate the complexes are nonelectrolyte. The magnetic moment values of the complexes display paramagnetic behavior. All studies confirm the formation of an octahedral geometry for complex 1 and the other complexes have tetrahedral geometrical structures. The structures of the complexes have also been theoretically studied by using the molecular mechanic calculations by the hyperchem. 8.03 molecular modeling program which confirm the proposed structures. The Schiff‐base ligand and its metal complexes have also been screened for their antimicrobial activities.