title: 4-[(2'-Cyano-biphenyl-4-yl)meth-yl]morpholin-4-ium perchlorate.
abstract: In the title salt, C(18)H(19)N(2)O(+)·ClO(4) (-), the morpholinium ring adopts a chair conformation, while the two benzene rings make a dihedral angle of 62.65 (17)°. Inter-molecular N-H⋯N hydrogen bonds and weak C-H⋯O inter-actions occur in the crystal structure.
authors.affiliation: Department of Chemical Engineering, Nanjing College of Chemical Technology, Nanjing 210048,  People's Republic of China.
authors.forename: Hua-Yong
authors.initials: HY
authors.lastname: Ou-Yang