Crystal structures of benzil monoximes controlled through configurational isomerism, molecular substitution and external complexation

Abstract

Crystal structures of the configurational isomers of benzil monoxime (1 and 2), a p-methoxy derivative (3) and its solvated species with triethylamine (3a) are reported showing specific influences of the molecular configuration, substitution and solvation on the conformational property and packing behaviour of the molecules. Based on the observed interdependences, in particular involving modes of interaction, potential utilization of the 1,2-dione monoxime functional unit for the purpose of crystal engineering seems promising.