Der Pharma Chemica
Journal for Medicinal Chemistry, Pharmaceutical Chemistry, Pharmaceutical Sciences and Computational Chemistry

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Studies on the metal complexes of Nâ??-(thiophen-2-yl-methylidene)- pyridine-4-carbohydrazide

Author(s): E. Vijaya Sekhar, K. N. Jayaveera and S. Srihari

Fe(III), Ru(III), Co(II), Ni(II), Cu(II), Pd(II), Zn(II) ,Cd(II) and Hg(II) complexes of a hydrazone derived from thiophene-2-carbaldehyde and pyridine-4-carbohydrazide have been synthesized and structurally characterized by various physico-chemical data.The ligand acts towards the metal ions , as a neutral, bidentate one coordinating through azomethine nitrogen and thiophene sulphur. Fe, Ru, Co, Ni, and Cu Complexes are paramagnetic while the remaining are diamagnetic . Consolidating all the data obtained, the Fe, Ru, Co, Ni, and Cu complexes have been assigned an octahedral geometry , Pd complex, a square planar geometry and the Zn, Cd and Hg complexes, a tetrahedral geometry.


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