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The title compound, C18H12F3N3OS2, was synthesized by the reaction of [(Z)-1-phenyl­methyl­idene]{5-[3-(trifluoro­meth­yl)phen­yl]-1,3,4-thia­diazol-2-­yl}amine and mercaptoacetic acid. In the structure there are intra­molecular C—H⋯S and C—H⋯N and inter­molecular C—H⋯N hydrogen bonds.

The title compound, C10H12O2, was synthesized by the Fries rearrangement of phenyl butyrate. There are two independent molecules in the asymmetric unit, and all non-H atoms in each molecule are coplanar, with r.m.s. deviations of 0.050 and 0.024 Å. In the crystal structure, each molecule is linked to symmetry-equivalent molecules by O—H...O hydrogen bonds to form chains along the a axis.

The title compound, {[K2(C22H12O6)(H2O)6]·2H2O}n, was prepared by slow evaporation of an aqueous solution of potassium dibenzoyl­terephthalate. The mol­ecular complex contains two potassium cations, one 2,5-dibenzoyl­terephthalate anion, six coordinated water mol­ecules and two uncoordinated water mol­ecules. The 2,5-dibenzoyl­terephthalate anion lies on a center of symmetry. Each potassium cation is coordinated by seven O atoms, two from 2,5-dibenzoyl­terephthalate anions and the remainder from four bridging and one terminal water mol­ecules. The uncoordinated water mol­ecules are linked to the carboxyl­ate O atoms and the coordinated water mol­ecules by a network of inter­molecular O—H⋯O hydrogen bonds, forming a layer structure.

The title compound, C23H25N5O4, was synthesized by the reaction of methyl (2-{[3-(3-pyridyl)-1,2,4-oxa­diazol-5-yl]­methoxy}phenyl)­acetate and N,N-di­methyl­form­amide di­methyl acetal. In the crystal structure, there are intramolecular C—H⋯O and C—H⋯N and intermolecular C—H⋯π interactions.

The title compound, C19H18N2O4S, was synthesized by the reaction of methyl (2-hydroxy­phenyl)­acetate and 3-(4-methyl­thio)­phenyl-5-chloro­methyl-1,2,4-oxa­diazo­le. The structure exhibits intermolecular C—H⋯O hydrogen bonds and C—H⋯π interactions.

The title compound, C18H15ClN2O4, was synthesized by the reaction of methyl (2-hydroxy­phenyl)­acetate and 5-chloro­methyl-3-(2-chloro­phenyl)1,2,4-oxa­diazo­le. In the crystal structure, there are a weak intramolecular C—H⋯N hydrogen bond and intermolecular C—H⋯O and C—H⋯π interactions.

The title compound, C26H30N4O6, was synthesized by the reaction of methyl (2-{[3-(3,5-di­methoxy­phenyl)-1,2,4-oxa­diazol-5-yl]­methoxy}phenyl)­acetate and N,N-di­methyl­form­amide di­methyl acetal. In the molecular structure, there are intramolecular C—H⋯O and C—H⋯N hydrogen bonds, and also intermolecular C—H⋯π and C—H⋯O interactions.

The title compound, C18H16N2O4, was synthesized by the reaction of methyl (2-hydroxy­phenyl)­acetate and 5-chloro­methyl-3-phenyl-1,2,4-oxa­diazo­le. In the crystal structure, there are weak intermolecular C—H⋯O hydrogen bonds and weak C—H⋯π(arene) interactions.

The title compound, C17H18N2O3, was synthesized by the reaction of ethyl 3-(3,4-di­methoxy­phenyl)­acryl­ate and phenyl­hydrazine. There are intermolecular N—H⋯O and C—H⋯O hydrogen bonds, and also C—H⋯π interactions.

In the crystal structure of the title compound, C15H16N2O3, N—H⋯O and O—H⋯O hydrogen bonds link the mol­ecules into a three-dimensional network, in which they may be effective in the stabilization of the crystal structure.

In the mol­ecule of the title compound, [K(C10H9NO3)(H2O)], the dihedral angle between the planes of the salicylidene and alanine units is 73.7 (3)°. In the crystal structure, inter­molecular O—H⋯O hydrogen bonds link the mol­ecules into a two-dimensional layer.

The asymmetric unit of the title compound, C16H13N3OS, contains two independent mol­ecules. The dihedral angles between the planar rings differ in the two mol­ecules. Weak intra- and inter­molecular C—H⋯S and C—H⋯N hydrogen bonds may be effective in the stabilization of the crystal structure.

In the mol­ecule of the title compound, C16H18O, the dihedral angle between the rings is 70.61 (3)°. In the crystal structure, inter­molecular O—H⋯O hydrogen bonds link the mol­ecules into chains, and may be effective in the stabilization of the structure.

In the molecule of the title compound, C10H7F2N3O, the dihedral angle between the planar rings is 84.00 (4)°. Intermolecular C—H...N hydrogen bonds link the molecules and may be effective in stabilizing the crystal structure.

The title compound, C19H21FN3O3PS, was synthesized by the reaction of N-benzylidene-5-(4-fluorophenyl)-1,3,4-thiadiazol-2-amine and diethyl phosphite. Intermolecular N—H...O hydrogen bonds connect molecules into centrosymmetric dimers.

The title compound, C20H23N3O3PS, was synthesized by the reaction of N-(4-chloro­benzyl­idene)-5-m-tolyl-1,3,4-thia­diazol-2-amine and diethyl phosphite. There are intra­molecular C—H⋯O and C—H⋯S inter­actions and a strong inter­molecular N—H⋯O hydrogen bond.

The title compound, C18H17N3OS, was synthesized by the reaction of 5-m-tolyl-1,3,4-thia­diazol-2-amine and 3,5-dimethyl­benzoyl chloride. Mol­ecules of the compound are linked by inter­molecular N—H⋯N hydrogen bonds to form centrosymmetric dimers.

The asymmetric unit of the title compound, C9H9N3S, contains four mol­ecules which are inter­connected through N—H⋯N hydrogen bonding, resulting in the formation of a tetra­meric structure.

The title compound, C6H9NO3, was prepared by the nucleophilic substitution reaction of methyl­acryloyl chloride with glycine. Inter­molecular N—H⋯O and O—H⋯O hydrogen bonds link the mol­ecules into a three-dimensional network, which may be effective in stabilizing the crystal structure.

The title compound, C6H9NO3, was prepared by a nucleophilic substitution reaction of acryloyl chloride with l-alanine. In the crystal structure, inter­molecular N—H⋯O and O—H⋯O hydrogen bonds link the mol­ecules into a three-dimensional network, in which they may be effective in the stabilization of the crystal structure.

The title compound, C8H6FN3S, was synthesized by the reaction of 4-fluoro­benzoic acid and thio­semicarbazide. The two H atoms of the amine are involved in N—H⋯N hydrogen bonding, resulting in the formation of layers parallel to the (100) plane.

The asymmetric unit of the title compound, C28H52N2O4, contains one half-mol­ecule; the molecule is located on a centre of inversion. The piperidine ring has a distorted chair conformation. In the crystal structure, inter­molecular N—H⋯O hydrogen bonds link the mol­ecules, forming a network, which may be effective in the stabilization of the crystal structure.

The title compound, C18H17N3O2S, was synthesized by reaction of [5-(4-methoxy­phen­yl)-1,3,4-thia­diazol-2-yl]amine with 3,5-dimethyl­benzoic acid. In the crystal structure, inter­molecular N—H⋯N hydrogen bonds link the mol­ecules into centrosymmetric dimers.

In the crystal structure of the title compound, C11H13NO4, the asymmetric unit contains only one half-mol­ecule; the molecule lies on a twofold rotation axis. The crystal structure is stabilized by inter­molecular C—H⋯O and C—H⋯N hydrogen bonds, linking the mol­ecules along the b axis.

In the molecule of the title compound, C19H20O4, the 1,3-dioxane rings have chair conformations. Intermolecular C—H...O hydrogen bonds link the molecules and may be effective in the stabilization of the crystal structure.

In the molecule of the title compound, C9H8O2, the benzocyclobutene system is nearly planar. In the crystal structure, intermolecular O—H...O hydrogen bonds link the molecules into dimers along the c axis.

The title compound, C20H19N3O2S2, crystallizes with C—H⋯O and C—H⋯N hydrogen bonds which form a three-dimensional network.

The title compound, C17H11Cl2N3OS2, was synthesized by the reaction of benzylidene[5-(2,4-dichlorophenyl)-1,3,4-thiadiazol-2-yl]amine and mercaptoacetic acid. In the crystal structure, there are C—H...O hydrogen bonds, resulting in a three-dimensional network. There is also a short intermolecular N...Cl interaction.

The title compound, C14H20O2, was synthesized by the reaction of phenol and octanoyl chloride. All non-H atoms are coplanar, with an r.m.s. deviation of 0.031 Å. In the crystal structure, molecules are linked into chains along the a axis by intermolecular C—H...O hydrogen bonds.

The title compound, C9H14N+·Br−, was synthesized by the reaction of pyridine and n-butyl bromide. The crystal packing is stabilized by inter­molecular C—H⋯Br hydrogen bonds.

The title compound, K+·C14H9O3−·2H2O, was prepared by slow evaporation of an aqueous solution of potassium 2-benzoyl­benzoate. Potassium cations are coordinated by six O atoms of two 2-benzoyl­benzoate anions and three water mol­ecules in a polymeric structure with bridging ligands. There are inter­molecular O—H⋯O hydrogen bonds in the crystal structure.

The title compound, C20H16N2O2, was synthesized from the reaction of 2,5-dibenzoyl­terephthalamide and sodium hypochlorite solution. The asymmetric unit contains one half-mol­ecule, the molecule being centrosymmetric. Intra- and inter­molecular N—H⋯O hydrogen bonds are highly effective in forming a two-dimensional layer structure.

The title compound, C16H16N2O2, was synthesized by the reaction of eth­yl 3-(4-methyl­phen­yl)acrylate and phenyl­hydrazine. There are inter­molecular N—H⋯O hydrogen bonds and C—H⋯π inter­actions.

The title compound, C22H14O6·2C2H6O, was synthesized by the reaction of benzene and pyromellitic acid dianhydride. The acid molecule is centrosymmetric. There are inter­molecular O—H⋯O hydrogen bonds and C—H⋯π inter­actions in the crystal structure.

In the structure of the title compound, C10H9ClN2O2, there is a weak intra­molecular C—H⋯N inter­action, and inter­molecular C—H⋯O and C—H⋯N inter­actions.

In the crystal structure of the title compound, C10H9ClN2O3S, there are intramolecular C—H⋯O and C—H⋯N and intermolecular C—H⋯O hydrogen bonds.