Question

Which one of the following complexes has least number of stereoisomers?

• A. \([Co(NH_{3})_{4}Cl_{2}]Cl\)
• B. \([Co(en)(NH_{3})_{2}Cl_{2}]Cl\)
• C. \([Co(en)_{2}Cl_{2}]Cl\)
• D. \([Co(en)_{3}]Cl_{3}\) \bigskip

Hint:

For octahedral complexes: \[ [MA_4B_2] \] shows only cis-trans isomerism, whereas complexes containing en usually exhibit optical isomerism as well.

Answer 1

The Correct Option is A