Cationic Planar Chiral (η<sup>6</sup>-Arene)Mn(CO)<sub>3</sub><sup>+</sup> Complexes: Resolution, NMR Study in Chiral-Oriented Solvents, and Applications to the Enantioselective Synthesis of 4-Substituted Cyclohexenones and (η<sup>6</sup>-Phosphinoarene)Mn(CO)<sub>3</sub><sup>+</sup> Complexes
cationic (η6-arene)Mn(CO)3+ complexes is the base of the strategy adopted for the first resolution of such complexes. X-ray structures of one of the (η5-cyclohexadienyl)Mn(CO)3 diastereoisomers obtained after addition of the chiral auxiliary as well as of the corresponding enantiopure η6 cationic complex after rearomatization have been established. Proton-decoupled deuterium 2D NMR in chiral polypeptide liquid