Coordination Compounds - Result Question 14
####16. $[Co(NH_3)_4(NO_2)_2]$ Cl exhibits
[2006]
(a) linkage isomerism, ionization isomerism and geometrical isomerism
(b) ionization isomerism, geometrical isomerism and optical isomerism
(c) linkage isomerism, geometrical isomerism and optical isomerism
(d) linkage isomerism, ionization isomerism and optical isomerism
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Solution:
- (a) The given compound may have linkage isomerism due to presence of $NO_2$ group which may be in the form $-NO_2$ or $-ONO$.
It may have ionisation isomerism due to presence of two ionisable group $-NO_2 &-Cl$. It may have geometrical isomerism in the form of cis-trans form as follows :
$[Co(NH_3)_4 Cl(NO_2)] NO_2$ &
$[Co(NH_3)_4(NO_2)_2] Cl$ - ionisation isomers.
$[Co(NH_3)_4(NO_2)_2] Cl &[Co(NH_3)_4(ONO)_2] Cl$
— Linkage isomers
Geometrical isomers
