Stereochemical and electronic interaction studies of 4′-substituted 2-(phenylselanyl)-2-(ethylsulfinyl)-acetophenones

Most stable conformer for the diastereomers CRSR [Y = NO2(1a), Br(2a), H(3a), Me(4a), OMe(5a)] and CRSS [Y = Br(2b), Me(4b)] in the gas phase.113