title: 2,6-Diamino-pyridinium tetra-phenyl-borate-1,2-bis-(5,7-dimethyl-1,8-naphthyridin-2-yl)diazene (1/1).
abstract: In the title compound, C(5)H(8)N(3) (+)·C(24)H(20)B(-)·C(20)H(18)N(6), the 1,2-bis-(5,7-dimethyl-1,8-naphthyridin-2-yl)diazene mol-ecule is essentially planar (r.m.s. deviation = 0.0045 Å) and aligned in nearly coplanar manner with the 2,6-diamino-pyridinium ion, making a dihedral angle of 5.19 (5)°. The diamino-pyridine mol-ecule is protonated on the central pyridine N atom and the B atom bears the counter-charge. The amine groups of the diamino pyridinium cation form intra-molecular N-H⋯N hydrogen bonds, resulting in linear and bent inter-actions with the naphthyridine ring system.
authors.affiliation: Department of Chemistry, The University of Western Ontario, Chemistry Building, 1151 Richmond Street, London, ON, Canada N6A 5B7.
authors.forename: Bhanu P
authors.initials: BP
authors.lastname: Mudraboyina
authors.forename: Hong-Bo
authors.initials: HB
authors.lastname: Wang
authors.forename: Roaxanne
authors.initials: R
authors.lastname: Newbury
authors.forename: James A
authors.initials: JA
authors.lastname: Wisner