3-[(Methyl-carbamo-yl)amino]-1H-isoindolium chloride.

The title compound, C(10)H(12)N(3)O(+)·Cl(-), is a derivative of o-phthaldehyde and methyl-thio-urea. The mol-ecules form dimers through intra- and inter-molecular N-H⋯O hydrogen bonds. The dimers are further linked into chains through one C-H⋯Cl and two N-H⋯Cl hydrogen bonds.

5-Hydr-oxy-2-methyl-4H-pyran-4-one.

The title compound, C(6)H(6)O(3), is a member of the pyrone family. The mol-ecules are planar (r.m.

3,3-Dichloro-1-ethyl-1H-2,1-benzothia-zin-4(3H)-one 2,2-dioxide.

In the title compound, C(10)H(9)Cl(2)NO(3)S, the S atom, which is a component atom of a heterocyclic ring, shows tetra-hedral coordination. The heterocyclic ring is not planar.

6-Bromo-1-ethyl-1H-2,1-benzothia-zin-4(3H)-one 2,2-dioxide.

In the title compound, C(10)H(10)BrNO(3)S, the S atom is four-coordinated in a distorted tetra-hedral configuration with nearly equal S=O bond distances; the S-C and S-N bond lengths are 1.755 (3) and 1.649 (3) Å, respectively.

2-Chloro-5-(2-iodo-benzene-sulfonamido)-benzoic acid.

In the mol-ecule of the title compound, C(13)H(9)ClINO(4)S, the coordination around the S atom is distorted tetra-hedral. The aromatic rings are oriented at a dihedral angle of 74.46 (9)°.

4-(2-Iodo-benzene-sulfonamido)benzoic acid monohydrate.

In the mol-ecule of the title compound, C(13)H(10)INO(4)S·H(2)O, the coordination around the S atom is distorted tetra-hedral. The aromatic rings are oriented at a dihedral angle of 74.18 (17)°.

Methyl 2-[(methyl-sulfon-yl)(prop-yl)amino]benzoate.

The asymmetric unit of the title compound, C(12)H(17)NO(4)S, contains two mol-ecules, both of which show disorder of the two terminal C atoms of the propyl chain over two sets of sites with an occupancy ratio of 0.581 (6):0.419 (6).

Phenyl N-cyclo-hexyl-carbamate.

In the title compound, C(13)H(17)NO(2), the dihedral angle between the benzene ring and the basal plane of the cyclo-hexyl ring is 49.55 (8)°. In the crystal, mol-ecules are linked by N-H⋯O hydrogen bonds, forming chains propagating in [010].

Phenyl piperidine-1-carboxyl-ate.

In the title compound, C(12)H(15)NO(2), the dihedral angle between the benzene ring and the basal plane of the piperidine ring (which is in a chair conformation) is 49.55 (8)°. In the crystal, mol-ecules are linked by C-H⋯O hydrogen bonds and very weak C-H⋯π inter-actions.

2-Hydr-oxy-5-nitro-benzamide.

In the title compound, C(7)H(6)N(2)O(4), an intra-molecular O-H⋯O hydrogen bond generates an S(6) ring. In the crystal, inversion dimers linked by pairs of N-H⋯O hydrogen bonds occur. Weak C-H⋯O links consolidate the packing, leading to R(2) (1)(7) and R(2) (2)(10) loops within (100) polymeric sheets.

rac-2-Iodo-3,4-dihydro-naphthalen-1(2H)-one.

In the title compound, C(10)H(9)IO, the asymmetric unit contains two mol-ecules, in which the iodo-bearing six-membered rings adopt envelope conformations [displacements of the flap atoms = 0.419 (3) and 0.431 (3) Å].

Mutual prodrug of cephazolin and benzydamin: 3-[(1-benzyl-1H-indazol-3-yl)-oxy]-N,N-dimethyl-propan-1-aminium 3-{[(5-methyl-1,3,4-thia-diazol-2-yl)sulfan-yl]meth-yl}-8-oxo-7-[(1H-tetra-zol-1-yl)acetamido]-5-thia-1-aza-bicyclo-[4.2.0]octane-2-carboxyl-ate (benzydaminium cephazolinate).

In the crystal of the title mol-ecular salt, C(19)H(24)N(3)O(+)·C(14)H(13)N(8)O(4)S(3) (-), the cations and anions are linked by N-H⋯O hydrogen bonds. Short intra-molecular C-H⋯O contacts occur within the anion and inter-molecular C-H⋯O and C-H⋯π bonds help to establish the packing.

3-(3-Methyl-phen-yl)-2-thioxo-1,3-thia-zolidin-4-one.

In the title compound, C(10)H(9)NOS(2), the dihedral angle between the rhodanine (2-thioxo-1,3-thia-zolidin-4-one) and 3-methyl-phenyl rings is 83.30 (3)°. The H atoms of the methyl group are disordered over two set of sites with an occupancy ratio of 0.

3-Cyclo-hexyl-2-thioxo-1,3-thia-zolidin-4-one.

In the title compound, C(9)H(13)NOS(2), the complete mol-ecule is generated by crystallographic mirror symmetry, with all the non-H atoms of the rhodanine (2-thioxo-1,3-thia-zolidin-4-one) system and two C atoms of the cyclo-hexyl ring lying on the reflecting plane. The conformation is stabilized by intra-molecular C-H⋯O and C-H⋯S inter-actions. In the crystal, weak π-π inter-actions at a distance of 3.

3-(2-Methyl-phen-yl)-2-thioxo-1,3-thia-zolidin-4-one.

In the title compound, C(10)H(9)NOS(2), the 1,3-thia-zolidine and 2-methyl-phenyl rings are oriented at a dihedral angle of 84.44 (9)°. In the crystal, an unusual bifurcated C-H⋯(O,π) inter-action leads to zigzag chains of mol-ecules.

Tricyclo-hexyl[2-(2,3-dimethyl-anilino)benzoato-κO]tin(IV).

In the title compound, [Sn(C(6)H(11))(3)(C(15)H(14)NO(2))], the Sn(IV) atom adopts a distorted tetra-hedral SnOC(3) arrangement. The dihedral angle between the benzene rings in the mefanamic acid mol-ecule is 82.16 (17)° and intra-molecular N-H⋯O and C-H⋯O hydrogen bonds help to establish the conformation.

Dimethyl (2-hydr-oxy-4-phenyl-but-3-en-2-yl)phospho-nate.

In the title compound, C(12)H(17)O(4)P, the phenyl-butenyl group is disordered over two sets of sites with an occupancy ratio of 0.755 (12):0.245 (12).

2-(2-Methyl-anilino)-N'-(propan-2-yl-idene)acetohydrazide.

The conformation of the title compound, C(12)H(17)N(3)O, is consolidated by an intra-molecular N-H⋯O hydrogen bond, generating an S(5) ring. In the crystal, inversion dimers linked by pairs of N-H⋯O inter-actions occur, resulting in R(2) (2)(8) ring motifs.

(5Z)-5-(2-Methyl-benzyl-idene)-3-phenyl-2-thioxo-1,3-thia-zolidin-4-one.

In the title compound, C(17)H(13)NOS(2), the heterocyclic ring is oriented at a dihedral angle of 74.43 (5)° with respect to the anilinic benzene ring and at a dihedral angle of 17.31 (9)° with respect to phenyl ring.

(5Z)-5-(2-Hydroxy-benzyl-idene)-3-phenyl-2-thioxo-1,3-thia-zolidin-4-one.

In the title compound, C(16)H(11)NO(2)S(2), the dihedral angles between the heterocyclic ring and the phenyl and anilinic benzene rings are 9.68 (13) and 79.26 (6)°, respectively, and an intra-molecular C-H⋯S inter-action occurs.

N'-[(E)-4-Hydr-oxy-3-methoxy-benzyl-idene]pyridine-4-carbohydrazide.

In the title compound, C(14)H(13)N(3)O(3), the two six-membered rings are oriented at a dihedral angle of 15.17 (11)° and an intra-molecular O-H⋯O hydrogen bond occurs. In the crystal, mol-ecules inter-act by way of N-H⋯O, O-H⋯N and C-H⋯O hydrogen bonds, thereby generating S(5) chain and R(2) (1)(7) ring motifs.

N'-[(E)-4-Hydr-oxy-3-methoxy-benzyl-idene]benzohydrazide.

In the title compound, C(15)H(14)N(2)O(3), the phenyl ring is disordered over two set of sites with an occupancy ratio of 0.810 (3):0.190 (3); the dihedral angle between the two components is 72.

2-(tert-Butoxy-carbonyl-amino)-2-(2-fluoro-phen-yl)acetic acid.

The title compound, C(13)H(16)FNO(4), consists of conventional, centrosymmetric carboxyl-ate dimers. These dimers form infinite polymeric chains due to inter-molecular N-H⋯O hydrogen bonding. The 2-fluoro-phenyl unit is disordered over two sets of sites with an ocupancy ratio of 0.

1-(5-Nitro-2-oxoindolin-3-yl-idene)-4-o-tolyl-thio-semicarbazide methanol monosolvate.

In the title compound, C(16)H(13)N(5)O(3)S·CH(4)O, the dihedral angle between the isatin unit and the 2-methyl-phenyl group is 41.81 (2)° and intra-molecular N-H⋯O and N-H⋯N hydrogen bonds occur, generating S(6) and S(5) rings, respectively. In the crystal, polymeric chains arise as a result of N-H⋯O, O-H⋯S and C-H⋯O inter-actions.

3-Hydr-oxy-N'-[(Z)-(5-methyl-2-fur-yl)methyl-idene]naphthalene-2-carbo-hydrazide.

The asymmetric unit of title compound, C(17)H(14)N(2)O(3), contains three independent mol-ecules. In one of these mol-ecules, the 5-methyl-2-furyl group is disordered over two sets of sites with an occupancy ratio of 0.747 (3):0.