title: 1H,3H-Imidazolium (R,S)-camphor-10-sulfonate.
abstract: The title compound, C(3)H(5)N(2) (+)·C(10)H(15)O(4)S(-), comprises two crystallographically independent ion pairs (A and B) in the asymmetric unit with slightly different conformations due to the disordered methyl groups in the anion of molecule A. Two intra-molecular C-H⋯O hydrogen bonds generate S(6) ring motifs. In mol-ecule A, the methyl groups are disordered over two sets of positions with a site-ocuppancy ratio of 0.547 (9):0.453 (9). Extensive inter-molecular N-H⋯O and C-H⋯O hydrogen-bonding inter-actions occur in the crystal structure which link the mol-ecules into a two-dimensional network parallel to the (100) plane.
authors.forename: Mohd Basyaruddin
authors.initials: MB
authors.lastname: Abdul Rahman
authors.forename: Emmy Maryati
authors.initials: EM
authors.lastname: Omar
authors.forename: Shie Ling
authors.initials: SL
authors.lastname: Ng
authors.forename: Reza
authors.initials: R
authors.lastname: Kia
authors.forename: Hoong-Kun
authors.initials: HK
authors.lastname: Fun