Bis(4-carbamoylpiperidinium) biphenyl-4,4′-disulfonate

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

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In the title isonipecotamide salt 2C6H 13N2O+·C12H8O 6S22-, the asymmetric unit comprises one biphenyl-4,4′-disulfonate dianion which lies across a crystallographic inversion centre and another in a general position [dihedral angle between the two phenyl rings is 37.1 (1)°], together with three isonipecotamide cations. Two of these cations give a cyclic homomeric amide-amide dimer inter-action [graph set R22(8)], the other giving a similar dimeric inter-action but across an inversion centre, both dimers then forming lateral cyclic R42(8) pyrimidinium-amide N - H⋯O inter-actions. These units are linked both laterally and longitudinally to the sulfonate groups of the dianions through piperidinium N - H⋯O hydrogen bonds, giving a three-dimensional framework structure.

Original languageEnglish
Pages (from-to)o3160-o3161
Number of pages2
JournalActa Crystallographica Section E: Structure Reports Online
Issue numberPart 12
Publication statusPublished - 1 Dec 2010
Externally publishedYes


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