title: Three-dimensional networks in bis(imidazolium) 2,2'-dithiodibenzoate and 4-methylimidazolium 2-[(2-carboxyphenyl)disulfanyl]benzoate.
abstract: Cocrystallization of imidazole or 4-methylimidazole with 2,2'-dithiodibenzoic acid from methanol solution yields the title 2:1 and 1:1 organic salts, 2C(3)H(5)N(2)(+).C(14)H(10)O(4)S(2)(2-), (I), and C(4)H(7)N(2)(+).C(14)H(10)O(4)S(2)(-), (II), respectively. Compound (I) crystallizes in the monoclinic C2/c space group with the mid-point of the S-S bond lying on a twofold axis. The component ions in (I) are linked by intermolecular N-H...O hydrogen bonds to form a two-dimensional network, which is further linked by C-H...O hydrogen bonds into a three-dimensional network. In contrast, by means of N-H...O, N-H...S and O-H...O hydrogen bonds, the component ions in (II) are linked into a tape and adjacent tapes are further linked by pi-pi, C-H...O and C-H...pi interactions, resulting in a three-dimensional network.
authors.affiliation: Institute of Natural Resources and Environmental Science, College of Environment and Planning, Henan University, Kaifeng 475001, People's Republic of China.
authors.forename: Linheng
authors.initials: L
authors.lastname: Wei
authors.forename: Ziliang
authors.initials: Z
authors.lastname: Wang
authors.forename: Xianggao
authors.initials: X
authors.lastname: Meng
mesh_terms: D001565:Benzoates / Q000737:chemistry*; D003460:Crystallization; D018360:Crystallography, X-Ray; D006860:Hydrogen Bonding; D007093:Imidazoles / Q000737:chemistry*; D008958:Models, Molecular; D013438:Sulfhydryl Compounds / Q000737:chemistry*
chemical_list: C543486:4,4'-dithiodibenzoic acid; C544580:4-methylimidazolium 2-((2-carboxyphenyl)disulfanyl)benzoate; D001565:Benzoates; D007093:Imidazoles; D013438:Sulfhydryl Compounds; C544579:bis(imidazolium) 2,2'-dithiodibenzoate; C023439:4-methylimidazole