Metal complex of Mn(II), Co(II), Ni(II) and Cu(II) with benzoic acid have been prepared and characterized by physiochemical methods. On the basis of electronic spectra and magnetic susceptibility measurement in conjunction with infrared spectra, six coordinated octahedral structure have been proposed to all the complexes. The benzoic acid and their complexes have been tested for their antibacterial activity against the bacteria E. coli, Bacillus subtilis, Pseudomonas aeruginosa and Staphylococcus aureus. Further, the non electrolytic nature of all the synthesized complexes was identified from conductivity measurements.