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A supramolecular ladder-like network from trimesic acid and pyrazine N,N'-dioxide
Vitthal N Yadav1, Carl Henrik Görbitz1
1Department of Chemistry, University of Oslo, Post Box 1033, Blindern 0315, Norway.
Abstract:
In the title complex, benzene-1,3,5-tricarboxylic acid-pyrazine N,N'-dioxide (2/1), C9H6O6·0.5C4H4N2O2, cocrystallized trimesic acid (TMA) and pyrazine N,N'-dioxide (PNO) molecules form strong O-H...O hydrogen bonds, but also important weak C-H...O and dipole-dipole intermolecular interactions, to generate a densely packed three-dimensional network. PNO molecules lie on inversion centres where they connect pairs of TMA sheets into distinct two-dimensional hydrogen-bonded layers perpendicular to the crystallographic ab diagonal.
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