Chemistry

Chemistry

Problem

Complex compounds(s) which is optical active and does not depend upon the orientation of the ligands around metal cation : (i) [CoCl3(NH3)3][\text{CoCl}_3(\text{NH}_3)_3] (ii) [Co(en)3]Cl3[\text{Co}(\text{en})_3]\text{Cl}_3 (iii) [Co(C2O4)2(NH3)2]−[\text{Co}(\text{C}_2\text{O}_4)_2(\text{NH}_3)_2]^- (iv) [CrCl2(NH3)2(en)]+[\text{CrCl}_2(\text{NH}_3)_2(\text{en})]^+ a. (ii), (iii) and (iv) b. (i), (ii) and (iv) (ii) and (iv) d. only (ii)
Intuitive explanation

Optical activity in coordination complexes arises from asymmetric arrangements around the metal center—but the key is distinguishing inherent chirality from ligand-dependent effects. You need to identify which complex(es) are chiral due to the metal's geometry itself, independent of how individual ligands orient. Look for octahedral complexes with three different ligand types in specific patterns, or bidentate ligands that lock in asymmetry regardless of their spatial orientation.

Intuitive explanation

Optical activity in coordination complexes arises from asymmetric arrangements around the metal center—but the key is distinguishing inherent chirality from ligand-dependent effects. You need to identify which complex(es) are chiral due to the metal's geometry itself, independent of how individual ligands orient. Look for octahedral complexes with three different ligand types in specific patterns, or bidentate ligands that lock in asymmetry regardless of their spatial orientation.

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