Chiral octahedral Ir(Ⅲ)complexes have been widely employed in many areas such as asymmetric conjugate additions of α,β-unsaturated 2-acyl imidazole as well as the discrimination and determination of the enantiopurity of varied amines and amine alcohol owing to theirs stability [1,2].Here we present an approach to the resolution of sulfoxide enantiomers with high enantiomeric excess.