Bis(N,N′-diphenylbenzamidinium) fumarate

Abstract

The crystal structure of the title compound, 2C19H17N2+·C4H2O42−, consists of centrosymmetric trimers built up of two crystallographically independent N,N′-diphenylbenzamidinium 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)°.