Bis(4-carbamoylpiperidinium) biphenyl-4,4'-disulfonate.

ABSTRACT: In the title isonipecotamide salt 2C(6)H(13)N(2)O(+)·C(12)H(8)O(6)S(2) (2-), 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 R(2) (2)(8)], the other giving a similar dimeric inter-action but across an inversion centre, both dimers then forming lateral cyclic R(4) (2)(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.

SUBMITTER: Smith G 

PROVIDER: S-EPMC3011572 | biostudies-literature | 2010 Nov

REPOSITORIES: biostudies-literature