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Figure 6
(a), (b) and (c) Types of C—H⋯O hydrogen-bond contacts found in bipyridinium nitrates; τ = H⋯O—N—O torsion angle.

Journal logoCRYSTALLOGRAPHIC
COMMUNICATIONS
ISSN: 2056-9890
Volume 58| Part 5| April 2002| Pages o519-o522
doi:10.1107/S1600536802006050
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