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In the crystal structure of title compound, C9H10N2OS, there are two symmetry-independent mol­ecules, each having an intra­molecular N—H...O hydrogen bond generating an S(6) ring motif. The benzene rings and the virtually planar acetyl­thoiurea fragments [r.m.s. deviations = 0.0045 and 0.0341 Å] are oriented at dihedral angles of 50.71 (6) and 62.79 (6)° in the two mol­ecules. In the crystal, N—H...S and N—H...O hydrogen bonds link mol­ecules via cyclic R22(8) and R22(12) motifs into a one-dimensional polymeric network extending along [101]. The intra- and inter­molecular N—H...O inter­actions are part of a three-center hydrogen bond. A C—H...S inter­action also occurs.

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In the title compound, C10H12N2OS, the toluene and the N-carbamothio­ylacetamide units are oriented at dihedral angle of 78.75 (5)°. An intra­molecular N—H...O hydrogen bond generates an S(6) ring. In the crystal, mol­ecules are linked into [101] chains by pairs of N—H...S hydrogen bonds [which generate R22(8) loops] and pairs of O—H...O hydrogen bonds [which generate R22(4) loops]. The two motifs alternate in the chain.

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In the title compound, C9H9ClN2OS, the 3-chloro­phenyl and acetyl­thio­urea fragments are oriented at a dihedral angle of 62.68 (5)°. An intra­molecular N—H...O hydrogen bond generates an S(6) ring motif. Mol­ecules are linked into dimers via a cyclic R22(8) motif of N—H...S hydrogen bonds. These dimers are further connected through C—H...S inter­actions, completing an R22(12) motif, into chains along [010].

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In the title compound, C9H9N3O3S, the benzene ring and the N-carbamothio­ylacetamide unit are oriented at a dihedral angle of 54.82 (4)°. The dihedral angle between the ring and its attached nitro group is 28.54 (12)°. An intra­molecular, bifurcated N—H...(O,O) hydrogen bond generates two S(6) rings. In the crystal, inversion dimers linked by pairs of N—H...S hydrogen bonds generate R22(8) loops. Weak C—H...O inter­actions link the dimers.

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In the title mol­ecule, C20H19FN4O3S, the heterocyclic thia­zine ring adopts a half-chair conformation with the S atom displaced by 0.668 (4) Å from the mean plane formed by the remaining ring atoms. The mean planes of the benzene and pyrazole rings are inclined with respect to each other at a dihedral angle of 17.4 (3)°. The acetamide chain (O/N/C/C/C) linking the pyrazole and 2-fluoro­benzyl rings is essentially planar (r.m.s. deviation = 0.030 Å) and forms dihedral angles with the mean planes of these rings of 78.8 (2) and 78.89 (14)°, respectively. The crystal structure is stabilized by N—H...O and C—H...O hydrogen-bonding inter­actions, resulting in a six-membered ring with an R21(6) motif, while C—H...O and C—H...F hydrogen-bonding inter­actions result in chains of mol­ecules lying along the c axis in a zigzag fashion.

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The asymmetric unit of the title compound, C15H10ClNO4S, contains two independent conformers wherein the 2-chloro­phenyl group in one is rotated by approximately 180° compared to the other mol­ecule. This affects the S—N—C—C(=O) and N—C—C(=O)—C torsion angles giving vlaues of −87.0 (2) and 158.7 (2)° in one mol­ecule and −104.3 (2) and −173.4 (2)° in the other. The benzisothia­zole ring systems in the two mol­ecules are essentially planar (r.m.s. deviations = 0.017 and 0.010 Å) and form dihedral angles of 73.53 (7) and 73.26 (6)° with the benzene rings. In the crystal, there are weak π–π inter­actions between the benzene rings of the benzisothia­zole groups and symmetry-related chloro­benzene rings with centroid–centroid distances of 3.6178 (13) and 3.6267 (15) Å. In addition, pairs of weak inter­molecular C—H...O hydrogen bonds form inversion dimers which are connected by further C—H...O hydrogen bonds into a three-dimensional network.
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