title: 5,5'-[1,4-Phenyl-enebis(methyl-enesulfanedi-yl)]bis-[1,3,4-thia-diazol-2(3H)-one] dimethyl sulfoxide disolvate.
abstract: The asymmetric unit of the title compound, C(12)H(10)N(4)O(2)S(4)·2C(2)H(6)OS, contains one half of the p-xylene mol-ecule and one dimethyl sulfoxide mol-ecule. The p-xylene mol-ecule is located about a crystallographic inversion centre. In the mol-ecule, the thia-diazole and benzene rings are almost perpendicular to one another, with a dihedral angle of 88.95 (6)°. In the crystal, an N-H⋯O hydrogen bond is observed between the two components. The dimethyl sulfoxide mol-ecule is disordered over two orientations with an occupancy ratio of 0.879 (1):0.121 (1).
authors.affiliation: Department of Chemistry, Chungnam National University, Daejeon 305-764,  Republic of Korea.
authors.forename: Sung Kwon
authors.initials: SK
authors.lastname: Kang
authors.forename: Nam Sook
authors.initials: NS
authors.lastname: Cho
authors.forename: Siyoung
authors.initials: S
authors.lastname: Jang