Question

Explain:-

A) facial isomers.

B)meridional isomers.

Answer 1

Facial and meridional isomersEdit

For MLa
3Lb
3, two isomers are possible - a facialisomer (fac) in which each set of three identical ligands occupies one face of the octahedron surrounding the metal atom, so that any two of these three ligands are mutually cis, and a meridional isomer (mer) in which each set of three identical ligands occupies a plane passing through the metal atom.