Molecular Geometry of 7α-Bromocholesteryl Chloride

Abstract

THE crystal and molecular structures of 7α-bromocholesteryl chloride, C₂₇H₄₄ClBr (Fig. 1), were determined by Bürki and Nowacki¹ in 1956 by single crystal X-ray diffraction analysis using a combination of heavy atom, isomorphous replacement, and Patterson superposition methods. The unit cell is monoclinic, space group P2₁ with cell constants of a₀ = 11.95 Å, b₀ = 8.78 Å, c₀ = 12.54 Å, β = 101.2°, and Z = 2.