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(E)-1-((pyridin-2-yl)methylidene)semicarbazide (PMSC) complexes of [Mn(PMSC)2 ]Cl2 (1), [Co(PMSC)2]Cl2 (2), [Ni(PMSC)2]Cl2.5H2O (3), and [Cu(PMSC)(H2O)]Cl2 (4) have been synthesized and characterized by different spectroscopic techniques, EPR, magnetic susceptibility and thermal stability measurements. Complex 3 crystallizes as octahedral coordination complex in monoclinic crystal system. Complexes 1 and 2 have been found to have octahedral geometries and 4 to have square planar geometry. The complexes were found to be groove binding to calf-thymus DNA.