5-Chloro-2-hy­droxy­benzoic acid

The asymmetric unit of the title compound, C7H5ClO3, contains two mol­ecules; both feature an intra­molecular O—H⋯O hydrogen bond, which generates an S(6) ring. In the crystal, both mol­ecules form inversion dimers linked by pairs of O—H⋯O hydrogen bonds with R 2 2(8) ring motifs. The dimers are inter­linked by C—H⋯O inter­actions

2-Hy­droxy-N-(4-methyl­phen­yl)benzamide

In the crystal structure of the title compound, C14H13NO2, the mol­ecules are approximately planar, the r.m.s. deviation for all non-H atoms being 0.0435 Å; the dihedral angle between the two rings is 3.45 (12)°. The planarity is accounted for in terms of the presence of intra­molecular N—H⋯O and C—H⋯O hydrogen bonding, each of which completes an S(6) ring motif. The mol­ecules are stabilized in the form of supra­molecular chains extending along the crystallographic c axis due to inter­molecular O—H⋯O and C—H⋯O hydrogen bonding; each type leads to an R 2 1(6) ring motif

N-(4-Chloro­phen­yl)-2-hy­droxy­benzamide

In the title compound, C13H10ClNO2, the dihedral angle between the aromatic rings is 20.02 (6)° and intra­molecular N—H⋯O and C—H⋯O hydrogen bonds both generate S(6) rings. In the crystal, mol­ecules are linked by O—H⋯O hydrogen bonds into C(6) chains propagating in [010]

2-(2-Oxothio­lan-3-yl)isoindoline-1,3-dione

In the title compound, C12H9NO3S, the isoindoline-1,3-dione group is almost planar, with an r.m.s. deviation of 0.020 Å, whereas the heterocyclic ring approximates to an envelope with the methyl­ene group not adjacent to the S atom in the flap position. A short intra­molecular C—H⋯O contact generates an S(6) ring motif. In the crystal structure, weak aromatic π–π stacking inter­actions occur between the centroids of the benzene rings at a distance of 3.558 (2) Å

2-Hy­droxy-5-nitro-N-phenyl­benzamide

The mol­ecule of the title compound, C13H10N2O4, is almost planar with a dihedral angle between the benzene rings of 1.99 (13)°. The nitro group and its parent benzene ring are oriented at a dihedral angle of 7.6 (3)°. Intra­molecular C—H⋯O and N—H⋯O hydrogen bonds form two planar S(6) motifs. Inter­molecular O—H⋯O=C hydrogen bonds join mol­ecules into chains extending along the c axis

(2R)-2-(1,3-Dioxoisoindolin-2-yl)-3-methyl­butanoic acid

In the title compound, C13H13NO4, the dihedral angle between the nine-membered phthalimino ring system and the carb­oxy­lic acid group is 67.15 (9)°. An intra­molecular C—H⋯O close contact, which forms an S(6) ring, may help to establish the mol­ecular conformation. In the crystal, mol­ecules are linked by O—H⋯O hydrogen bonds, thereby forming C(7) chains propagating in [010]

4-Chloro-2-hy­droxy-N-(4-methyl­phen­yl)benzamide

In the title compound, C14H12ClNO2, the dihedral angle between the aromatic rings is 14.87 (11)° and an intra­molecular N—H⋯O hydrogen bond generates an S(6) ring. In the crystal, mol­ecules are linked by O—H⋯O hydrogen bonds, generating C(6) chains propagating along the c-axis direction

2-Hy­droxy-N-(3-nitro­phen­yl)benzamide

In the crystal structure of title compound, C13H10N2O4, as expected, the nitro- and hy­droxy-substituted benzene rings are planar with r. m. s. deviations of 0.0037 and 0.0014 Å, respectively, but are twisted slightly relative to each other, making a dihedral angle of 12.23 (7)°. The nitro group is only slightly twisted [by 2.71 (16)°] with respect to its parent ring. An intra­molecular N—H⋯O hydrogen bond forms an S(6) ring motif. Inter­molecular N—H⋯O and O—H⋯O hydrogen bonds build up sheets parallel to the ab plane. Futhermore, weak π–π inter­actions [centroid–centroid distances = 3.7150 (8) 3.7342 (6) and 3.9421 (8) Å] between the rings yield a three-dimensional network

Octa­methyldi-μ3-oxido-bis­(μ2-thio­phene-3-acetato-κ2 O:O′)(thio­phene-3-acetato-κO)tetra­tin(IV)

In the centrosymmetric title compound, [Sn4(CH3)8(C6H5O2S)4O2], the central four-membered planar ring (Sn2O2) makes dihedral angles of 66.28 (12) and 77.43 (11)° with the heterocyclic rings of the bridging and monodentate ligands, respectively. One SnIV atom adopts a distorted SnO3C2 trigonal-bipyramidal geometry, with both C atoms in equatorial sites and the other a grossly distorted SnO4C2 octa­hedral or irregular arrangement. In the crystal, the mol­ecules are connected into pillar-like polymeric units making R 2 2(12) ring motifs due to inter­molecular C—H⋯O inter­actions. C–H⋯π inter­actions are also present. The O atoms of the chelating ligands and the S atom of the monodentate ligand are disordered over two sets of sites in a 0.65 (6):0.35 (6) rati

2-(1,3-Dioxoisoindolin-2-yl)propanoic acid

The crystal structure of the title compound, C11H9NO4, consists of infinite one-dimensional polymeric chains due to inter­molecular O—H⋯O hydrogen bonds between the carboxyl­ate and carbonyl groups. The phthalimide ring system and the C—COO group are planar, with r.m.s. deviations of 0.0253 and 0.0067 Å, respectively, from their mean square planes and the dihedral angle between them is 66.41 (7)°. The mol­ecules are stabilized by C=O⋯π inter­actions and weak intra­molecular C—H⋯O hydrogen bonds