Coordination CompoundMedium
Question
The complex which has facial and meridional isomers is
(Given: py = pyridine and en $= H_{2}\text{ }N - {CH}_{2} - {CH}_{2} - {NH}_{2}$ )
Options
A.$\left\lbrack Co\left( {NH}_{3} \right)_{4}\left( H_{2}O \right)_{2} \right\rbrack^{3 +}$
B.$\left\lbrack Ni(en)_{2}\left( H_{2}O \right)_{2} \right\rbrack^{2 +}$
C.$\left\lbrack Cr(py)_{3}(Cl)_{3} \right\rbrack$
D.$\left\lbrack Cr\left( H_{2}O \right)_{6} \right\rbrack^{3 +}$
Solution
Sol. [Key Concept: fac/mer isomerism in octahedral complexes]
The complex with type $\left\lbrack {Ma}_{3}{\text{ }b}_{3} \right\rbrack$ type of complexes shows fac and mer type of isomers.
$\therefore\ \left\lbrack Cr(py)_{3}(Cl)_{3} \right\rbrack$ shows fac and mer isomers.
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