Steric effects in the electronic spectra of substituted benzophenones

Abstract

A previous study on the ultra-violet absorption of a series of symmetrically substituted benzophenones [1] has been extended to include methyl-substituted benzophenones in which the methyl groups are arranged in a non-symmetrical way. In addition, a small number of ethyl-, i-propyl-, and t-butyl-benzophenones were involved in this research. The sterio effects due to ortho substitution could be derived from the U.V. absorption spectra and were mutually compared. © 1957.