228 research outputs found
3-(2,4,6-Trimethylbenzoyl)-2-naphthoic acid
The asymmetric unit of the title compound, C21H18O3, contains two crystallographically independent molecules. The two molecules are linked into cyclic centrosymmetric dimers R
2
2(8) by O—H⋯O hydrogen bonds. The dihedral angles between the naphthalene ring system and the benzene ring are 87.0 (8) and 84.4 (2)° in the two molecules. The crystal packing is stabilized by O—H⋯O, C—H⋯π and π–π interactions [centroid–centroid distance = 3.664 (11) Å]. In one molecule, the mesityl ring is disordered over two positions [occupancy ratio 0.690 (3):0.690 (3)]
2,3,4,9-Tetrahydro-1H-carbazole
In the title compound, C12H13N, two methylene C atoms of the cyclohexene ring are disordered over two sites with occupancies of 0.591 (10) and 0.409 (10); both disorder components adopt half-chair conformations. The crystal structure is stabilized by intermolecular N—H⋯π and C—H⋯π interactions
N-(2-Formylphenyl)benzenesulfonamide
In the title compound, C13H11NO3S, the two aromatic rings are oriented at an angle of 88.18 (8)°. Intramolecular N—H⋯O and C—H⋯O hydrogen bonds are observed, each of which generates an S(6) ring motif. In the crystal, molecules are linked into C(7) chains along [010] by intermolecular C—H⋯O hydrogen bonds. The structure is further stabilized by intermolecular C—H⋯π interactions involving the sulfonyl-bound phenyl ring
Diethyl 2-(2-nitrobenzylidene)malonate
In the title compound, C14H15NO6, the ethoxycarbonyl groups adopt extended conformations. In the crystal, molecules are linked into centrosymmetric dimers via pairs of C—H⋯O hydrogen bonds with a R
2
2(20) motif
Naphthalene-2,3-diylbis[(2-thienyl)methanone]
The asymmetric unit of the title compound, C20H12O2S2, contains two crystallographically independent molecules which differ in the orientations of thienylmethanone units with respect to the naphthalene ring system [dihedral angles of 65.30 (11) and 50.94 (11)° in one molecule, 41.94 (12) and 69.61 (13)° in the other]. The crystal structure is stabilized by C—H⋯O and C—H⋯π interactions
Ethyl 2-acetoxymethyl-1-phenylsulfonyl-1H-indole-3-carboxylate
In the title compound, C20H19NO6S, the phenyl ring of the phenylsulfonyl group makes a dihedral angle of 83.35 (5)° with the indole ring system. The molecular structure exhibits a number of short intramolecular C—H⋯O contacts
(4-Bromophenyl)(1-phenylsulfonyl-1H-indol-2-yl)methanone
In the title compound, C21H14BrNO3S, the indole ring system forms dihedral angles of 65.64 (8) and 59.30 (8)°, respectively, with the phenyl and bromophenyl rings. In the crystal, molecules are connected by a C—H⋯O hydrogen bond, forming a chain along [101]. The chains are further connected by weak intermolecular C—H⋯π interactions, forming a layer parallel to the ac plane
5-Methylphenanthro[2,3-b]thiophene
The title compound, C17H12S, which crystallises with two molecules in the asymmetric unit, features four fused rings forming an essentially planar molecule, with maximum deviations from the mean plane of 0.078 (2) and 0.080 (2) Å for C atoms of the thiophene and phenanthrene groups in both the molecules. The crystal packing features weak C—H⋯π interactions
2-Chloromethyl-3-methyl-1-phenylsulfonyl-1H-indole
In the title compound, C16H14ClNO2S, the phenyl ring makes a dihedral angle of 78.1 (1)° with the indole ring system. The molecular structure is stabilized by weak intramolecular C—H⋯O interactions. The crystal structure exhibits weak intermolecular C—H⋯O, C—H⋯π and π–π [centroid–centroid distances = 3.620 (1)–3.794 (1) Å] interactions
Diethyl 3,4-bis(acetoxymethyl)thieno[2,3-b]thiophene-2,5-dicarboxylate
In the title compound, C18H20O8S2, the dihedral angle between the two thiophene rings is 2.33 (7)°. The methyl C atoms of the ester groups are disordered over two positions; the site-occupancy factors of the terminal methyl C atoms are 0.632 (18):0.368 (18) and 0.623 (17):0.377 (17). The molecular structure is stabilized by weak intramolecular C—H⋯O interactions and the crystal structure is stabilized through weak intermolecular C—H⋯O interactions
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