In recent days large area of inorganic chemistry research is acquired by coordination chemistry due to its interesting and significant properties. Coordination chemistry has always been challenge. Earlier there were mysteries about structure and bonding. The rapid developing field of bio-inorganic chemistry is centered on the study of coordination compounds present in living organisms. Many biologically active compounds are coordination complexes. The similar types of synthesized complexes have served as model of such biologically active compounds. The bio-inorganic chemistry is largely concerned with coordination chemistry.