Abstract:
Following the classical work of Werner whose
co-ordination theory provided the first rational
foundation for the study of transition metal complexes,
chemists have endeavoured to discover the underlying
principles involved in these compounds. Thus, while
Werner noticed the directional property of the bonds
between metal and ligand, it was not until Pauling (1931)
and others were able to apply a wave mechanical treatment,
that an explanation for the rigid stereochemical requirements
of the metal was found. With this growth in
fundamental knowledge the interpretation and use of the
physical properties of complex compounds has become
possible. For example, the magnetic susceptibility has
been related to the electronic configuration of the metal
atom, (Pauling loc. cit.) enabling predictions to be made
about the type of metal-ligand bond.
