Haemoglobin, the red
pigment of blood which acts as oxygen carrier is a coordination
compound of iron Vitamin B12, cyanocobalamine, the anti–
pernicious anaemia factor, is a coordination compound of cobalt Among the other compounds of biological importance with
coordinated metal ions are the enzymes like, carboxypeptidase A
and carbonic anhydrase (catalysts of biological systems) •
Coordination compounds are used as catalysts for many industrial
processes