N-[2-(4-Chlorophenyl)-5-methyl-4-oxo-1,3-thiazolidin-3-yl]pyridine-3-carboxamide (original) (raw)

N -[2-(4-Chlorophenyl)-5-methyl-4-oxo-1,3-thiazolidin-3-yl]pyridine-3-carboxamide

Acta Crystallographica Section E Structure Reports Online, 2011

The title compound, C 16 H 14 ClN 3 O 2 S, crystallizes with two molecules in the asymmetric unit. In the 1,3-thiazolidine rings, the carbonyl O atoms, the S atoms, the methyl groups and the ring carbon attached to the methyl groups are disordered with occupancy ratios of 0.509 (7):0.491 (7) in one molecule and 0.464 (14):0.536 (14) in the other. The crystal structure is stabilized by intermolecular N-HÁ Á ÁN, C-HÁ Á ÁO hydrogen bonds and C-HÁ Á ÁCl interactions. In addition, there is astacking interaction [centroid-centroid distance = 3.794 (3) Å ] between the benzene and pyridine rings. Symmetry codes: (i) x þ 1; y; z; (ii) Àx þ 1; Ày; Àz; (iii) Àx þ 1; Ày þ 1; Àz; (iv) Àx; Ày; Àz þ 1; (v) x À 1; y À 1; z þ 1; (vi) Àx; Ày; Àz.

(E)-5-{4-[2-(5-Ethylpyridin-2-yl)ethoxy]benzylidene}thiazolidine-2,4-dione

IUCrData, 2018

In the title compound, C19H18N2O3S, the thiazolidine ring makes dihedral angles of 46.97 (8) and 7.19 (9)° with the pyridine and benzene rings, respectively. The intramolecular structure is stabilized by a weak C—H...S hydrogen bond, which generates a S(6) graph-set motif, and a weak C—H...O contact. In the crystal, N—H...N and C—H...O hydrogen bonds leads to infinite one-dimensional chains along (201) and generate an R 2 2(7) ring-set motif. The crystal structure is further consolidated by weak π–π [centroid-to-centroid distance = 3.8204 (10) Å] interactions.

Crystal structure of ( Z )-3-allyl-5-(4-chlorobenzylidene)-2-sulfanylidene-1,3-thiazolidin-4-one

Acta Crystallographica Section E Crystallographic Communications, 2015

In the title compound, C13H10ClNOS2, the dihedral angle between the rhodanine (r.m.s. deviation = 0.008 Å) and 4-chlorobenzylidene rings is 1.79 (11)°. The allyl group attached to the N atom, which lies almost perpendicular to the rhodanine ring, is disordered over two orientations in a 0.519 (13):0.481 (13) ratio. A short intramolecular C—H...S interaction closes anS(6) ring. In the crystal, molecules are linked by π–π stacking interactions [centroid–centroid separation = 3.600 (15) Å], generating inversion dimers.

Ethyl 3-[(6-chloropyridin-3-yl)methyl]-2-oxoimidazolidine-1-carboxylate

Acta Crystallographica Section E Structure Reports Online, 2012

In the title compound, C 12 H 14 ClN 3 O 3 , the imidazole ring adopts a half-chair conformation. The dihedral angle between the pyridine and imidazole rings is 70.0 (1). In the crystal, the molecules are linked by C-HÁ Á ÁO interactions, forming chains parallel to the c axis.

(4E)-1-Phenyl-4-{[(pyridin-2-yl)amino]methylidene}pyrazolidine-3,5-dione

IUCrData, 2016

The title compound, C15H12N4O2, contains two independent molecules in the asymmetric unit. These differ in terms of dihedral angles that the phenyl and 2-pyridyl rings subtend with the central five-membered ring; 15.2 (2) and 2.9 (2)°, respectively, in one molecule, 8.9 (2) and 5.1 (2)°for the second. In the crystal, the independent molecules each self-associate to form layers through N—H...O and C—H...O hydrogen bonding. The layers associate through π–π interactions between the phenyl rings and isolated carbon–carbon double bonds [shortest midpoint–centroid distance = 3.347 (4) Å]. The crystal studied was refined as a two-component twin.

Crystal structure of 2-methyl-N-[(4-methyl-pyridin-2-yl)carbamo-thio-yl]benzamide

Acta crystallographica. Section E, Crystallographic communications, 2015

In the title compound, C15H15N3OS, there is an intra-molecular N-H⋯O hydrogen bond and an intra-molecular C-H⋯S hydrogen bond involving the C=O and C=S bonds which lie on opposite sides of the mol-ecule. The mol-ecule is non-planar with the benzene and pyridine rings being inclined to one another by 26.86 (9)°. In the crystal, mol-ecules are linked by pairs of N-H⋯S hydrogen bonds, forming inversion dimers with an R 2 (2)(8) ring motif. The dimers are linked via C-H⋯S hydrogen bonds, forming slabs parallel to the bc plane.

N,N-Diethyl-2-[5-(4-methoxybenzylidene)-2,4-dioxo-1,3-thiazolidin-3-yl]acetamide

IUCrData, 2017

In the title compound, C17H20N2O4S, the thiazolidine (r.m.s. deviation = 0.022 Å) and phenyl rings (major and minor occupancies) are inclined to one another by 6.3 (3) and 10.5 (3)°, respectively. The molecular conformation is stabilized by an intramolecular C—H...S interaction. In the crystal, molecules are linked by C—H...O hydrogen bonds, which generate R 2 2(18), R 2 2(24) and R 2 1(7) ring motifs. Aromatic π–π stacking interactions are also observed.

3-Methyl-5-(4-oxo-4 H -chromen-3-ylmethylene)-1,3-thiazolidine-2,4-dione

Acta Crystallographica Section E Structure Reports Online, 2006

In the title compound, C14H9NO4S, the benzopyran and thiazolidine ring systems are each planar. The thiazolidine ring makes a dihedral angle of 3.84 (4)° with the benzopyran ring system. The molecular structure is stabilized by intramolecular C—H...O interactions.