title: 5,7-Dimethyl-2,3-dihydro-1H-1,4-diazepin-4-ium picrate.
abstract: In the cation of the title compound, C(7)H(13)N(2) (+)·C(6)H(2)N(3)O(7) (-), the seven-membered 1,4-diazepine ring forms a twist chair conformation. The two o-nitro groups in the anion are twisted by 35.0 (7) and 36.0 (9)° from the benzene ring. In the crystal, N-H⋯O hydrogen bonds between the cation and anion along with weak C-H⋯O hydrogen bonds produce chains along the b axis. C-H⋯O hydrogen bonds connecting the chains are also present.
authors.forename: Jerry P
authors.initials: JP
authors.lastname: Jasinski
authors.forename: Ray J
authors.initials: RJ
authors.lastname: Butcher
authors.forename: H S
authors.initials: HS
authors.lastname: Yathirajan
authors.forename: B
authors.initials: B
authors.lastname: Narayana
authors.forename: K
authors.initials: K
authors.lastname: Prakash Kamath