Questions/Coordination Compounds/Which of these compl...
Isomerism in ComplexesCoordination Compounds

Which of these complexes shows Geometrical Isomerism: [Co(NH3)6]3+[Co(NH_3)_6]^{3+} , [Co(CN)5(NC)]3[Co(CN)_5(NC)]^{3-} , or [Cr(H2O)4Cl2]+[Cr(H_2O)_4Cl_2]^{+} ?

Expert Answer

[Cr(H2O)4Cl2]+[Cr(H_2O)_4Cl_2]^{+} . It is an MA4B2MA_4B_2 type complex which can form cis and trans isomers. The others are homoleptic or MA5BMA_5B type which do not show GI.

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