New concepts of chemical bonding
and molecular structure have provided insights into
the functioning of these compounds as vital components
of biological systems Chlorophyll, haemoglobin and
vitamin B12 are coordination compounds of magnesium,
iron and cobalt respectively Variety of metallurgical
processes, industrial catalysts and analytical reagents
involve 
the 
use 
of 
coordination 
compounds Coordination compounds also find many applications
in electroplating, textile dyeing and medicinal chemistry