In the title spiro compound, C(25)H(22)N(4)S, the planar quinoxaline (r.m.s. deviation = 0.070 Å) and planar thia-diazole (r.m.s. deviation = 0.060 Å) ring systems share a common C atom; their mean planes are aligned at 89.7 (1)°. The thia-zole ring possesses two aromatic ring substituents and is nearly coplanar with these rings [the dihedral angles between the thia-diazole and phenyl rings are...

In the title compound, C(10)H(8)N(3)S(+)·NO(3) (-)·H(2)O, one of the N atoms of the benzimidazole unit is protonated, unlike than that in the thia-zole group. This protonation leads to equalization of the bond angles at the two N atoms of the benzimidazole group. The benzimidazole and thia-zole systems are almost coplanar, forming a dihedral angle of 0.5 (2)°. In the crystal, the nitrate anion ...

In the title compound, C(13)H(13)NO(6)S, the thia-zine ring adopts a distorted half-chair conformation. Each mol-ecule is linked to its neighbour through inter-molecular C-H⋯O hydrogen bonds.

There are two mol-ecules, A and B, in the asymmetric unit of the title compound, C14H16N2O4S, which is the first example reported in this family of compounds in which the Nsp(3) atom of the thia-diazine ring is methyl-ated. The thia-diazine rings adopt shallow envelope conformations, with the S atoms displaced by 0.319 (12) and 0.182 (12) Å from the mean planes of the other ring atoms in mol-ec...

The title mol-ecule, C(8)H(6)BrNS(2), is almost planar with a dihedral angle of 0.9 (1)° between the benzene and thia-zole rings. The values of the geometry-based index of aromaticity (HOMA) and the nucleus-independent chemical shift (NICS) for the two cyclic fragments of the title mol-ecule are 0.95 and -9.61, respectively, for the benzene ring, and 0.69 and -7.71, respectively, for the thia-z...

In the title compound, [NiCl(C(10)H(7)N(3)S)(2)(H(2)O)]NO(3), the Ni(II) ion is coordinated by four N atoms from two chelating 2-(1,3-thia-zol-4-yl)-1H-benzimidazole ligands, one Cl atom and one water mol-ecule in a distorted octa-hedral geometry. In the crystal, O-H⋯O, N-H⋯O and N-H⋯Cl hydrogen bonds link the complex cations and nitrate anions into a three-dimensional network. π-π inter-action...

The title compound, C29H24N2OS, contains a pheno-thia-zine moiety linked to a planar carbazole unit (r.m.s. deviation = 0.029 Å) by a C-C single bond. The pheno-thia-zine moiety possesses a typical non-planar butterfly structure with a fold angle of 27.36 (9)° between the two benzene rings. The dihedral angle between the mean planes of the carbazole and pheno-thia-zine units is 27.28 (5)°. In t...

In the crystal structure of the title mol-ecule, C(13)H(15)NO(5)S, the S and N atoms of the thia-zine ring exihibit the maximum deviations from the least-squares plane of 0.3008 (6) and 0.3280 (7) Å, respectively. The ring therefore adopts a half chair conformation. The thia-zine ring is twisted by an angle of 13.29 (7)° with respect to the aromatic ring. The isopropyl substituent is oriented a...

The title compound, C16H20N4OS2, was synthesized by the reaction of 2-benzyl-sulfanyl-5-chloro-acetamido-1,3,4-thia-diazole and piperidine in a 1:2 ratio. The planes of the acetamide and 1,3,4-thia-diazole units are twisted by 10.8 (4)°. The thia-diazole S atom and the acetamide O atom are syn-oriented due to a hypervalent S⋯O inter-action of 2.628 (4) Å. In the crystal, mol-ecules form centros...

In the title compound, C(16)H(22)N(2)OS(2), the S atom of the thia-diazole ring and the attached methyl groups are disordered over two orientations with a refined site-occupancy ratio of 0.641 (11):0.359 (11). The thia-diazole ring is in a twist conformation in both disorder components. The mean plane through the thia-diazole ring makes dihedral angles of 77.39 (8) (major component) and 67.45 (...