Crystal structure, spectral and thermal properties of 2-aminopyridinium adipate monoadipic acid dihydrate

Odabasoglu M., Buyukgungor O., Turgut G., Karadag A., Bulak E., Lonnecke P.

JOURNAL OF MOLECULAR STRUCTURE, vol.648, pp.133-138, 2003 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 648
  • Publication Date: 2003
  • Doi Number: 10.1016/s0022-2860(02)00720-2
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.133-138
  • Yozgat Bozok University Affiliated: Yes


In the title complex, C22H36N4O10, cyclic eight-membered hydrogen bonded rings exist involving 2-aminopyridinium and adipate ions. Adipic acid molecules and adipate ions are linked in zigzag chains by O-H...O hydrogen bonds. The characteristic IR absorption bands of 2-aminopyridinium adipate monoadipic acid dihydrate were observed as; 35002500 cm(-1) region (hydrogen bonded O-H and N-H stretch), 1695 cm(-1) (carboxylic C=O stretch), 1595 cm(-1) (C=N ring stretching and N-H bending vibrations), 1565 and 1395 cm(-1) (asymmetrical and symmetrical stretch of carboxylate ion, respectively). The title complex showed two thermal decomposition steps. Crystallization water release in the first step (105-118 degreesC) and remaining anhydrous complex decomposition completely in the second step (120-450 degreesC). (C) 2003 Elsevier Science B.V. All rights reserved.