title: 2-Carb-oxy-1-phenyl-ethanaminium perchlorate.
abstract: In the title compound, C(9)H(12)NO(2) (+)·ClO(4) (-), an intra-molecular N-H⋯O inter-action results in the formation of a six-membered ring having a twisted chair conformation. In the crystal structure, inter-molecular O-H⋯O, N-H⋯O and C-H⋯O inter-actions link the mol-ecules into a network. A weak C-H⋯π inter-action is also found.
authors.affiliation: Ordered Matter Science Research Center, College of Chemistry and Chemical Engineering, Southeast University, Nanjing 210096, People's Republic of China.
authors.forename: Xiu-Zhi
authors.initials: XZ
authors.lastname: Li
authors.forename: Hui
authors.initials: H
authors.lastname: Li
authors.forename: Zhi-Rong
authors.initials: ZR
authors.lastname: Qu