Crystal Growth, Spectral, Magnetic, Antibacterial and Antifungal Studies of Co(II) and Ni(II) Complexes of 4-Nitrobenzoic Acid
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Single crystals of cobalt(II) and nickel(II) complexes of 4-nitrobenzoic acid have been successfully grown bygel diffusion technique. The grown crystals were characterized by elemental analysis, FT-IR and UV-Visible spectroscopy. The structureof the grown crystals was elucidated using single crystal X-ray diffraction studies. The title compounds [Co(Pnba)2(H2O)4]·2H2O 1 and [Ni(Pnba)2(H2O)4]·2H2O 2 where PnbaH=4-nitrobenzoic acid, crystallize in centrosymmetric triclinic space group P-1. Magnetic susceptibility measurements reveal that the compounds are paramagnetic in nature. The mechanical strength of thegrown crystals was determined by Vicker’s microhardness studies. The ligand (4-nitrobenzoic acid) and the complexes have beenscreened for their biological activity against various bacteria and fungi. The activity data show that the biological activity ofthe complexes is higher than that of the ligand.
Abstract
Single crystals of cobalt(II) and nickel(II) complexes of 4-nitrobenzoic acid have been successfully grown bygel diffusion technique. The grown crystals were characterized by elemental analysis, FT-IR and UV-Visible spectroscopy. The structureof the grown crystals was elucidated using single crystal X-ray diffraction studies. The title compounds [Co(Pnba)2(H2O)4]·2H2O 1 and [Ni(Pnba)2(H2O)4]·2H2O 2 where PnbaH=4-nitrobenzoic acid, crystallize in centrosymmetric triclinic space group P-1. Magnetic susceptibility measurements reveal that the compounds are paramagnetic in nature. The mechanical strength of thegrown crystals was determined by Vicker’s microhardness studies. The ligand (4-nitrobenzoic acid) and the complexes have beenscreened for their biological activity against various bacteria and fungi. The activity data show that the biological activity ofthe complexes is higher than that of the ligand.
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