In the title spiro compound, C(29)H(24)N(4)S, the quinoxaline and thia-diazole ring systems share a common C atom; their mean planes are aligned at 87.0 (1)° in one mol-ecule and at 84.1 (1)° in the other independent mol-ecule. The thia-zole ring possesses two aromatic ring substituents and is roughly coplanar with these rings [the dihedral angles between the thia-diazole and phenyl rings are 1...

In the racemic title compound, C20H15NO2S, the planes of the two phenyl substituents form dihedral angles of 48.97 (15) and 69.26 (15)° with that of the fused benzene ring of the parent benzo-thia-zine ring, while the heterocyclic thia-zine ring exhibits a screw-boat pucker. The O atom on the S atom of the ring is pseudo-axial on the thia-zine ring and trans to the 2-phenyl group. In the crysta...

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...