title: 3-exo-Chloro-8-oxabicyclo-[3.2.1]oct-6-ene-2,4-diol chloro-form 0.33-solvate.
abstract: The title compound, 3C(7)H(9)ClO(3)·CHCl(3), crystallizes with mol-ecules of 3-exo-chloro-8-oxabicyclo-[3.2.1]oct-6-ene-2,4-diol (A) and chloro-form in a 3:1 ratio, in the space group R3m. Mol-ecules of A straddle a crystallographic mirror plane, whereas the chloro-form mol-ecules (C and H atoms) lie additionally on the threefold axis. The mol-ecules of A are linked into right- and left-helical chains by means of O-H⋯O hydrogen bonds, thus forming columns running along the c axis. Six inter-penetrated columns form a channel in which the solvent mol-ecules (chloro-form) are located.
authors.affiliation: Chemistry Department, Moscow State University, 119991 Moscow, Russian Federation.
authors.forename: Viktor A
authors.initials: VA
authors.lastname: Tafeenko
authors.forename: Leonid A
authors.initials: LA
authors.lastname: Aslanov
authors.forename: Marina V
authors.initials: MV
authors.lastname: Proskurnina
authors.forename: Sergei E
authors.initials: SE
authors.lastname: Sosonyuk
authors.forename: Dmitrii A
authors.initials: DA
authors.lastname: Khlevin