9.10 Draw the structures of optical isomers of:

(i) [Cr(C2O4)3]3–           (ii) [PtCl2(en)2]2+

(iii) [Cr(NH3)2Cl2(en)]+

(i) [Cr(C2O4)3]3–  is an optically active compound and its structures are as follows:

(ii) PtCl2(en)2]2+ shows geometrical isomerism and its cis form is optically active. The trans form is optically inactive due to the plane of symmetry.  The optical isomers is as follows:
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(iii) [Cr(NH3)2Cl2(en)]+