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 Examples include rhodium complex, [(Ph3P)3RhCl], a
Wilkinson catalyst, is used for the hydrogenation of alkenes