Type: Article

2,3-Diaminopyridinium 6-carboxypyridine-2-carboxylate

Journal: Acta Crystallographica Section E: Structure Reports Online (16005368)Year: 2011/12/01Volume: 67Issue: 12

Foroughian, MahsaForoumadi, Alireza Notash B. Bruno G.Amiri Rudbari H.^a

a :University of Isfahan - IRAN(IR) - Isfahan

Green • GoldDOI:10.1107/S1600536811047647Language: English

Abstract

The asymmetric unit of the title proton-transfer compound, C 5H8N3 +·C7H 4NO4 -, consists of one mono-deprotonated pyridine-2,6-dicarb-oxy-lic acid as anion and one protonated 2,3-diaminopyridine as cation. The crystal packing shows extensive O-H⋯O, N-H⋯O and N - H⋯N hydrogen bonds. Thre are also several π-π interactions between the anions and also between the cations [centriod-centroid distances = 3.6634 (7), 3.7269 (7), 3.6705 (7) and 3.4164 (7) Å].

Author Keywords

data-to-parameter ratio = 13.7mean σ(C-C) = 0.002 ÅR factor = 0.035single-crystal X-ray studyT = 296 KwR factor = 0.107