Mudraboyina Bhanu P, Wang Hong-Bo, Newbury Roaxanne, Wisner James A
Department of Chemistry, The University of Western Ontario, Chemistry Building, 1151 Richmond Street, London, ON, Canada N6A 5B7.
Acta Crystallogr Sect E Struct Rep Online. 2011 May 1;67(Pt 5):o1222. doi: 10.1107/S1600536811012943. Epub 2011 Apr 29.
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.
在标题化合物C(5)H(8)N(3) (+)·C(24)H(20)B(-)·C(20)H(18)N(6)中，1,2-双（5,7-二甲基-1,8-萘啶-2-基）二氮烯分子基本呈平面状（均方根偏差 = 0.0045 Å），并与2,6-二氨基吡啶鎓离子以近共平面的方式排列，二面角为5.19 (5)°。二氨基吡啶分子在中心吡啶N原子上质子化，B原子带有反电荷。二氨基吡啶鎓阳离子的胺基形成分子内N-H⋯N氢键，导致与萘啶环系统形成线性和弯曲相互作用。
