title: (2S,3S)-3-(4-Chloro-phen-yl)-8-methyl-tropane-2-carboxylic acid.
abstract: In the title compound, C(15)H(18)ClNO(2), the inter-nal torsion angles of the tropane ring are comparable to those of tropane rings in the crystal structures reported for cocaine and its derivatives. There is an intra-molecular hydrogen bond between the N atom in the tropane ring and the O atom of the carboxyl group. The crystal structure is further stabilized by many weak C-H⋯O inter-actions between the mol-ecules in the ab plane, forming a two-dimensional supra-molecular network.
authors.affiliation: The Key Laboratory of Nuclear Medicine, Ministry of Health, Jiangsu Institute of Nuclear Medicine, Wuxi 214063, People's Republic of China.
authors.forename: Zheng-Ping
authors.initials: ZP
authors.lastname: Chen
authors.forename: Song-Pei
authors.initials: SP
authors.lastname: Wang
authors.forename: Xiao-Min
authors.initials: XM
authors.lastname: Li
authors.forename: Jie
authors.initials: J
authors.lastname: Tang
authors.forename: Jian-Guo
authors.initials: JG
authors.lastname: Lin