5,5′-[1,4-Phenyl­enebis(methyl­enesulfanedi­yl)]bis­[1,3,4-thia­diazol-2(3H)-one] dimethyl sulfoxide disolvate

The asymmetric unit of the title compound, C12H10N4O2S4·2C2H6OS, contains one half of the p-xylene mol­ecule and one dimethyl sulfoxide mol­ecule. The p-xylene mol­ecule is located about a crystallographic inversion centre. In the mol­ecule, the thia­diazole 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 mol­ecule is disordered over two orientations with an occupancy ratio of 0.879 (1):0.121 (1)

5-({3-[(5-Amino-1,3,4-thia­diazol-2-yl)sulfanylmeth­yl]benz­yl}sulfan­yl)-1,3,4-thia­diazol-2-amine

In the title compound, C12H12N6S4, the two terminal thia­diazole rings are twisted with respect to the central benzene ring, making dihedral angles of 54.28 (4) and 76.56 (3)°. The dihedral angle between the two thia­diazole rings is 27.77 (4)°. Inter­molecular N—H⋯N hydrogen bonds stabilize the crystal packing, linking the mol­ecules into a tape along the b axis

N-(5-Eth­oxy-1,3,4-thia­diazol-2-yl)benzamide

In the title compound, C11H11N3O2S, the dihedral angle between the thia­diazole and phenyl rings is 28.08 (7)°. In the crystal, mol­ecules are linked into an inversion dimer by a pair of inter­molecular N—H⋯N hydrogen bonds with an R 2 2(8) graph-set motif

1-Benzoyl-2-thio­biuret

In the title compound [systematic name: N-(carbamoyl­carb­a­mo­thio­yl)benzamide], C9H9N3O2S, the benzoyl and terminal urea fragments adopt cisoid and transoid conformations, respectively, with respect to the S atom. The benzoyl and thio­biuret groups are almost coplanar, making a dihedral angle of 8.48 (5)°. The mol­ecular structure is stabilized by an intra­molecular N—H⋯O hydrogen bond. In the crystal, N—H⋯O and N—H⋯S hydrogen bonds link the mol­ecules into a sheet parallel to the bc plane

5-Amino-1,3,4-thia­diazol-2(3H)-one

The asymmetric unit of the title compound, C2H3N3OS, contains three independent mol­ecules which are essentially planar, with r.m.s. deviations of 0.011 (2)–0.027 (2) Å from the mean plane defined by the seven non-H atoms. In the crystal, N—H⋯N and N—H⋯O hydrogen bonds link the mol­ecules into a sheet parallel to the (111) plane

N-(5-Sulfanyl­idene-4,5-dihydro-1,3,4-thia­diazol-2-yl)acetamide dimethyl sulfoxide disolvate

In the title compound, C4H5N3OS2·2C2H6OS, the five-membered heterocyclic ring and the N—(C=O)—C plane of the acetamide group are essentially co-planar, with a dihedral angle of 1.25 (3)°. Inter­molecular N—H⋯O hydrogen bonds between the acetamide compound and the dimethyl sulfoxide mol­ecules stabilize the crystal structure. The two dimethyl sulfoxide mol­ecules are each disordered over two positions with occupancy ratios of 0.605 (2):0.395 (2) and 0.8629 (18):0.1371 (18)

Ethyl N-[(benz­yloxy)thio­carbon­yl]carbamate

In the title compound, C11H13NO3S, the dihedral angle between the benzyl and carbamate groups is 12.67 (10)°. The S atom and the carbonyl O atom are positioned anti to each other. In the crystal, pairs of N—H⋯S hydrogen bonds link mol­ecules into inversion dimers