L1 /   
4
CH1012
STRUCTURAL ISOMERS I
Coordination-sphere Isomers
These result from interchange of ligands / ions from within and outside the coordination sphere.
  eg. [Co(NH3)5Br]Cl   and [Co(NH3)5Cl]Br
Hydrate isomerism is a special case of
coordination-sphere isomerisation:
eg. [Cr(H2O)6]Cl3  
      [Cr(H2O)5Cl]Cl2.H2O  
      [Cr(H2O)4Cl2]Cl.2H2O
Note the ionisation means moving ions into and out of the coordination sphere – hence alternate name ionization isomers.