title: Tramadolium picrate.
abstract: In the title salt {systematic name: [2-hy-droxy-3-(3-meth-oxy-phen-yl)cyclo-hexyl-meth-yl]dimethyl-aza-nium 2,4,6-trinitro-phenol-ate}, C(16)H(26)NO(2) (+)·C(6)H(2)N(3)O(7) (-), the cation is protonated at the N atom. The cyclo-hexane ring adopts a chair conformation with the hy-droxy substituent in an axial position. In the crystal, O-H⋯O and N-H⋯O hydrogen bonds link the cations and anions into supra-molecular chains along [100].
authors.forename: B P
authors.initials: BP
authors.lastname: Siddaraju
authors.forename: Grzegorz
authors.initials: G
authors.lastname: Dutkiewicz
authors.forename: H S
authors.initials: HS
authors.lastname: Yathirajan
authors.forename: Maciej
authors.initials: M
authors.lastname: Kubicki