Journal article

The 1 : 1 proton-transfer compound of 8-quinolinol (oxine) with pyrazine-2,3-dicarboxylic acid: 8-hydroxyquinolinium 3-carboxypyrazine-2-carboxylate dihydrate

Graham Smith, Urs D Wermuth, Peter C Healy, Jonathan M White

ACTA CRYSTALLOGRAPHICA SECTION E-CRYSTALLOGRAPHIC COMMUNICATIONS | INT UNION CRYSTALLOGRAPHY | Published : 2006

Abstract

The asymmetric unit of the title compound, C9H 8NO+·C6H3-N2O 4-·2H2O, contains two independent cations, two anions and four water molecules of solvation. A three-dimensional framework structure is formed through extensive hydrogen-bonding involving most donor and acceptor species. Significant aromatic C-H⋯O and cation-cation π-π interactions are also present. © 2006 International Union of Crystallography All rights reserved.

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