Complexes of type [M(AB)₂a₂], [Ma₂b₂cd], [M(AB)₃] and [M(AB)₂ab] are octahedral, where AB is an unsymmetrical bidentate chelate and a, b, c, d are different monodentate ligands. Select the type for wh

Question

Complexes of type [M(AB)₂a₂], [Ma₂b₂cd], [M(AB)₃] and [M(AB)₂ab] are octahedral, where AB is an unsymmetrical bidentate chelate and a, b, c, d are different monodentate ligands. Select the type for which the ratio of the number of enantiomeric pairs to the total number of stereoisomers equals 1/4.

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[M(AB)₂a₂]: 8 stereoisomers, 3 pairs, ratio 3/8. [Ma₂b₂cd]: 8 stereoisomers, 2 pairs, ratio 1/4. [M(AB)₃]: 4 stereoisomers, 2 pairs, ratio 1/2. [M(AB)₂ab]: 11 stereoisomers, 5 pairs, ratio 5/11. Only [Ma₂b₂cd] gives 1/4.

Chemistry - Coordination Chemistry Question with Solution | TestHub

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