Bis[2-(2,4-dinitrobenzyl)pyridinium] biphenyl-4,4′-disulfonate trihydrate

Graham Smith, Urs D. Wermuth, David J. Young

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In the structure of the title salt, 2C12H10N 3O4 +·C12H8O 6S2 2-·3H2O, determined at 173 K, the biphenyl-4,4′-disulfonate dianions lie across crystallographic inversion centres with the sulfonate groups inter-acting head-to-head through centrosymmetric cyclic bis-(water)-bridged hydrogen-bonding associations [graph set R 4 4(11)], forming chains. The 2-(2,4-dinitrobenzyl)pyridinium cations are linked to these chains through pyridinium-water N - H⋯O hydrogen bonds and a two-dimensional network is formed through water bridges between sulfonate and 2-nitro O atoms, while the structure also has weak cation-anion π-π aromatic ring interactions [minimum ring centroid separation = 3.8441 (13) Å].

Original languageEnglish
Pages (from-to)o1184-o1185
Number of pages2
JournalActa Crystallographica Section E: Structure Reports Online
Issue numberPart 5
Publication statusPublished - 14 Apr 2010
Externally publishedYes


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