Bis(2,6-diaminopyridinium)-adipate-adipic acid-water (2/1/1/2)

Abstract

The crystal structure of the title compound, 2C(5)H(8)N(3)(+)center dot-C6H8O42-center dot C6H10O4 center dot 2H(2)O, consists of aminopyridinium cations, adipate dianions, adipic acid molecules and disordered solvent water molecules [occupancies 0.50 (4) and 0.50 (4)]. Both the adipate and adipic acid are located across inversion centres. Eight-membered hydrogen-bonded rings exist involving aminopyridinium and adipate ions. Adipic acid molecules and adipate anions are linked into zigzag supramolecular chains by O-H center dot center dot center dot O hydrogen bonds.