| OCR Text |
Show 178 The moleculr tetrahedral dissymmetry of this compound is determined by the configuration of the central atom, by the unsymmet and rical character of the bivalent radicals associated with carry The phenyl group at a one end and carbonyl group at a it, which the othero interpretation of the data should provide a stringent test, of both the arising coupled oseillator, mechanisms from the coupling of the zoylpyruvic chromophores can be should be n + For example the otation ° n* transitibns of the two ben- calculated from Equation 401 and quite large judging from molecular models which reveal that the two chromophores lie nearly perpendicular to eaeh othero Similarly the rotation ,arising from the n + n* (magnetic dipole allowed) of the carbonyl groups could cussed in terms of the 100 The n + at least be qualitatively dis- Jones-Eyring me9hanismo n* Cotton Effects of Benzoin Equation 2016a of the text has been used by Kwoh and Eyring [To Co Kwoh, and Ho Eyring, Jo Chema Physo, 18, uate the rotation associated with the III.:, 1186 (1950)] to eval- - n + n* transition of Benzoin |
