Structure and Conformation of Photosynthetic Pigments and Related Compounds 3. Crystal Structure of β-Carotene*

Abstract

The crystal structure of the title compound (C40H56, Mw = 536.8) has been redetermined by X-ray diffraction methods in order to achieve a structure at higher resolution suitable for theoretical calculations. The crystal system is monoclinic, P21/n, a = 7.656(2), b = 9.445(5), c = 23.536(15) Å, β = 93.41(2)°, V = 1698.8(15) Å3, Z = 2, D = 1.050 mg/m3, 130 K. R = 0.071, Rw = 0.076. © 1992, Walter de Gruyter. All rights reserved.