1467101-59-2Relevant articles and documents
Proton-transfer supramolecular salts based on proton sponge 2,2′-dipyridylamine
Ding, Xue-Hua,Li, Yong-Hua,Wang, Shi,Li, Xing-Ao,Huang, Wei
, p. 124 - 131 (2013)
Reactions between proton sponge 2,2′-dipyridylamine and acidic synthons (2,4-dinitrobenzoic acid, 3,4-dinitrobenzoic acid and picronitric acid) afford three proton-transfer supramolecular ammonium salts, (2,4-dinitrobenzoate)?(2,2′-dipyridylammonium) (1), (3,4-dinitrobenzoate)?(2,2′-dipyridylammonium)?(H 2O) (2) and (picrate)?(2,2′-dipyridylammonium) (3), respectively. During solution crystallization, the proton transfers from the organic acid to the nitrogen atom in the pyridyl ring. It is found that monoprotonated dpaH+ has an asymmetrical intramolecular hydrogen bond (IHB) N-H+?N, which results in the intramolecular S(6) ring. All supramolecular architectures of 1-3 involve extensive classical hydrogen bonds and display a three-dimensional (3D) framework structure. Robust hydrogen bonding interactions generate various intermolecular ring motifs.
