Indicate the types of isomerism exhibited by the following complexes and draw the structures for these isomers:
(i) K[Cr(H2O)2(C2O4)2
(ii) [Co(en)3]Cl3
(iii) [Co(NH3)5(NO2)](NO3)2
(iv) [Pt(NH3)(H2O)Cl2]
(i) K[Cr(H2O)2(C2O4)2 exhibits geometrical isomerism (Cis and trans) and optical isomerism of cis and trans type.
(ii) Optical isomerism exhibiting mirror images.
(iii) Ionisation isomerism- [Co(NH3)5(NO3)](NO3)(NO2) and
Linkage isomerism-[Co(NH3)5(ONO)](NO3)2
(iv) Geometrical isomers are seen in [Pt(NH3)(H2O)Cl2]