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|Title:||Synthesis and characterisation of oxomolybdenum(V) and dioxomolybdenum(VI) complexes with Schiff base derived from isonicotinoylhydrazide|
|Authors:||Nair, M L Harikumaran|
|Series/Report no.:||Int. Cl.<sup>9</sup> C07C251/02; C07F11/00|
|Abstract:||Synthesis of some new oxomolybdenum(V) and dioxomolybdenum(VI) complexes with a Schiff base, 3-methoxysalicylaldehydeisonicotinoylhydrazone derived from 3-methoxysalicylaldehyde and isonicotinoylhydrazide are reported. The complexes have been characterized by elemental analyses, molar conductance, magnetic susceptibility data, IR, UV-vis, EPR, <sup>1</sup>H NMR and FAB mass spectral studies. The physico-chemical studies and spectral data indicate that the ligand acts as a monovalent tridentate chelating agent. The FAB mass and X-band EPR spectra indicate that the pentavalent Mo in the complex [MoO(MSINH)Cl<sub>2</sub>] is monomeric in nature. The X-ray diffraction studies of [MoO(MSINH)Cl<sub>2</sub>] correspond to orthorhombic crystal lattice with unit cell dimensions: <i style="">a</i> = 8.043Ả, <i style="">b</i> = 12.49Ả and <i style="">c</i> = 14.936Ả. All the complexes are found to be neutral with distorted octahedral geometry. The thermal properties of the complex [MoO(MSINH)Cl<sub>2</sub>] have been investigated by thermogravimetric techniques. The ligand, [MoO(MSINH)Cl<sub>2</sub>] and [MoO<sub>2</sub>(MSINH)Cl] have been screened for their <i>in vitro</i> anticancer and antibacterial activity. The complex, [MoO(MSINH)Cl<sub>2</sub>], exhibits much higher activity than the ligand (MSINH) and its dioxocomplex, [MoO<sub>2</sub>(MSINH)Cl].|
|Appears in Collections:||IJC-A Vol.48A(09) [September 2009]|
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