title: Bis(N,N'-diphenyl-benzamidinium) fumarate.
abstract: The crystal structure of the title compound, 2C(19)H(17)N(2) (+)·C(4)H(2)O(4) (2-), consists of centrosymmetric trimers built up of two crystallographically independent N,N'-diphenyl-benzamid-in-ium cations and one fumarate dianion, which is located on a centre of inversion. The components of the trimers are linked by N-H⋯O hydrogen bonding. In the cation, the outer rings make dihedral angles of 53.66 (5) and 78.38 (5)° with the central ring. The two outer rings make a dihdral angle of 81.49 (5)°.
authors.affiliation: University of Latvia, Kr. Valdemara 48, Riga, LV 1013, Latvia.
authors.forename: Liana
authors.initials: L
authors.lastname: Orola
authors.forename: Mikelis V
authors.initials: MV
authors.lastname: Veidis