Abstract
The solid-state CD spectra were measured for optically active trigonal crystals of benzil (dibenzoyl) and its crystalline inclusion complexes with cholic and deoxycholic acids. The observed negative Cotton effect corresponding to the lowest energy n–π* transition was correlated with the P helicity of the strongly twisted α-diketone moiety. The absolute configuration of the enclathrated guest molecule in the 1:2 inclusion complex between benzil and cholic acid was also determined by X-ray crystal analysis.
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