Q. Which kinds of isomerism is exhibited by octahedral $ Co(N{{H}_{3}})B{{r}_{2}}Cl $ ? (1) Optical (2) Geometrical (3) Linkage (4) lonisation
BHUBHU 2011
Solution:
Octahedral $ Co{{(N{{H}_{3}})}_{4}}B{{r}_{2}}Cl $ shows ionisation and geometrical isomerism. In ionisation isomerism ligands show different coordination sphere and the anions present outside the coordination sphere.
$ [Co{{(N{{H}_{3}})}_{4}}B{{r}_{2}}]Cl{{[Co{{(N{{H}_{3}})}_{4}}B{{r}_{2}}]}^{+}}+C{{l}^{-}} $
$ [Co{{(N{{H}_{3}})}_{4}}BrCl]Br{{[Co{{(N{{H}_{3}})}_{4}}BrCl]}^{+}}+B{{r}^{-}} $
In geometrical isomerism, coordination number of central atom is six and shape is octahedral.
