X-Ray crystal and molecular structure of 1,19-diethoxycarbonyl-2,3,7,8,12,13,17,18-octamethylbilatriene-abc hydrobromide
Abstract
The molecular structure of the title compound (2), the deprotonation product of the corresponding biladiene-ac salt (1), has been determined by X-ray diffraction; on deprotonation the linear ‘ridge-like’ arrangement of (1) is changed to a helical conformation of the bilatriene chromophore.