The title compound, C9H8N2OS, crystallizes with two mol-ecules (A and B) in the asymmetric unit. The dihedral angles between the mean planes of the 1,3-benzo-thia-zol-2-yl ring system and the acetamide group are 2.7 (4) (mol-ecule A) and 7.2 (2) Å (mol-ecule B). In the crystal, pairs of N-H⋯N hydrogen bonds link the A and B mol-ecules into dimers, generating R 2 (2)(8) loops. The dimers stack a...

In the racemic title compound, C19H14N2OS, the two phenyl substituents on the 1,3-thia-zine ring are almost perpendicular to the pyridine ring which is fused to the thia-zine ring [inter-ring dihedral angles = 87.90 (8) and 85.54 (7)°]. The dihedral angle between the two phenyl rings is 75.11 (7)°. The six-membered thia-zine ring has an envelope conformation with the ortho-related C atom formin...

In the title compound, C(17)H(15)NO(5)S, the benzene ring of the fused-ring system is twisted by 11.67 (6)° with respect to the thia-zine ring. The atoms of the four-atom methyl ester group and the phenyl ring of the benzyl unit are inclined at 16.50 (7) and 44.52 (3)° with respect to the thia-zine ring. An intra-molecular O-H⋯O hydrogen bond gives rise to a six-membered S(6) ring motif. In the...

In the title compound, C(28)H(22)BrFN(6)S, the central pyrazole ring has an envelope conformation, with the methine C atom being the flap atom. The dihedral angles between the least-squares plane through this ring and the adjacent thia-zole [18.81 (15)°] and triazole [1.83 (16)°] rings indicate a twist in the mol-ecule. A further twist is evident by the dihedral angle of 64.48 (16)° between the...

In the title compound, C(17)H(15)NO(2)S, the seven-membered thia-zepine ring adopts a distorted twist-boat conformation. The dihedral angle between the mean planes of the benzothia-zepin ring system and the attached benzene ring is 47.7 (1)°. In the crystal, pairs of N-H⋯O hydrogen bonds link inversion-related mol-ecules into dimers, generating R(2) (2)(8) ring motifs. These dimers are further ...

In the title compound, C(17)H(12)F(3)NO(4)S, the heterocyclic thia-zine ring adopts a half-chair conformation with the S and the N atoms displaced by -0.608 (3) and 0.105 (3) Å, respectively, from the mean plane formed by the remaining ring atoms. The dihedral angle between the two benzene rings is 36.63 (8)° and the acetic acid group is inclined at right angles [89.78 (8) °] to the mean plane ...

The title compound, C(19)H(15)Cl(2)N(3)OS(2), was synthesized by the reaction of N-(2,4-dichloro-phen-yl)-5-(3,5-dimethyl-phen-yl)-1,3,4-thia-diazol-2-amine and mercaptoacetic acid. The thia-zolidinone ring adopts a twist conformation. The 2,4-dichloro-phenyl ring is almost perpendicular to the thia-diazole ring, the dihedral angle being 82.8 (2)°. The 3,5-dimethyl-phenyl ring is nearly coplana...

In the title compound, C(30)H(30)N(4)O(7)S, the two spiro junctions link a planar 2-oxindole ring [with a mean deviation from the plane of 0.0319 (3) Å, a pyrrolidine ring in an envelope conformation and a thia-zolo[3,2-a]pyrimidine system. Two mol-ecules are connected into a dimer by two N-H⋯O hydrogen bonds, forming an R(2) (2)(8) graph-set motif. The title compound has four stereogenic cente...

In the title compound, C(22)H(18)FNO(3)S(2), the five-membered thia-zolidine ring is planar (r.m.s. deviation = 0.003 Å) and forms dihedral angles of 70.2 (3), 73.16 (17) and 10.32 (14)° with the cyclo-propane, fluoro-benzene and methyl-thio-benzene rings, respectively. The sum of the bond angles around the thia-zolidine ring N atom (359.6°) indicates sp(2) hybridization. The mol-ecular structu...

The title compound, C22H22OS [systematic name: 4-(1,3,3-trimethyl-2,3-di-hydro-1H-4-thia-phenanthren-1-yl)phenol], crystallizes unsolvated from nitro-methane as colourless prisms (m.p. 425-427 K) in the polar monoclinic space group Ia with Z' = 2 (mol-ecules A and B). Both independent mol-ecules possess a very similar proximal conformation, this referring to the juxtaposition of the 4-hy-droxy-...