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1.  2-(1-Benzo­thio­phen-2-yl)-4H-1,3,4-oxa­diazin-5(6H)-one 
In the title compound, C11H8N2O2S, the oxadiazinone ring is nearly planar [maximum deviation = 0.016 (4) Å], and is approximately coplanar with the benzo­thio­phene ring system [dihedral angle = 3.1 (5)°]. In the crystal, mol­ecules are linked by N—H⋯O hydrogen bonds, forming chains running along the b-axis direction.
doi:10.1107/S1600536813033291
PMCID: PMC3914084  PMID: 24526987
2.  Dimethyl 3,3′-(phenyl­methyl­ene)bis­(1H-indole-2-carboxyl­ate) 
In the title compound, C27H22N2O4, the two indole ring systems are approximately perpendicular to each other, with a dihedral angle of 84.5 (5)° between their planes; the benzene ring is twisted with respect to the two indole ring systems at angles of 78.5 (5) and 86.5 (3)°. In the crystal, mol­ecules are linked by N—H⋯O hydrogen bonds, weak C—H⋯O and C—H⋯N hydrogen bonds, and C—H⋯π inter­actions into a three-dimensional supra­molecular architecture.
doi:10.1107/S1600536813024471
PMCID: PMC3790385  PMID: 24098207
3.  3-Chloro-2,4,5-trifluoro­benzoic acid 
The title compound, C7H2ClF3O2, was prepared by the chlorination of 3-amino-2,4,5-trifluoro­benzoic acid. The carboxyl group is twisted relative to the benzene ring by 6.8 (1)°. In the crystal, pairs of O—H⋯O hydrogen bonds link mol­ecules into typical centrosymmetric carb­oxy­lic acid dimers. These dimers are arranged into sheets parallel to (-103).
doi:10.1107/S1600536812049446
PMCID: PMC3588316  PMID: 23476418
4.  N-[(2S)-2-Chloro­propano­yl]glycine 
The title compound, C5H8ClNO3, was prepared by the nucleophilic substitution reaction of (2S)-2-chloro­propanoyl chloride with glycine. The acetate group forms a dihedral angle of 84.6 (1)° with the mean plane of the C—NH—C=O fragment. In the crystal, the molecules are linked by N—H⋯O and O—H⋯O hydrogen bonds, generating a three-dimensional network, which consolidates the crystal packing.
doi:10.1107/S1600536812036720
PMCID: PMC3435838  PMID: 22969684
5.  Diethyl 3,3′-(phenyl­methyl­ene)bis­(1H-indole-2-carboxyl­ate) 
In the title compound, C29H26N2O4, the benzene ring is twisted by 73.5 (5) and 84.9 (3)° with respect to the mean planes of the two indole ring systems; the mean planes of the indole ring systems are oriented at a dihedral angle of 82.0 (5)°. In the crystal, mol­ecules are linked by pairs of N—H⋯O hydrogen bonds into chains.
doi:10.1107/S1600536812036239
PMCID: PMC3435799  PMID: 22969645
6.  Methyl 4-(4-fluoro­phen­yl)-6-isopropyl-2-(methylsulfonyl)pyrimidine-5-carbox­ylate 
The asymmetric unit of the title compound, C16H17FN2O4S, contains three independent mol­ecules, in which the pyrimidine and benzene rings are oriented at dihedral angles of 41.72 (3)°, 26.21 (3)° and 36.49 (3)°. Intra­molecular C—H⋯O hydrogen bonds result in the formation of two six- and one seven-membered non-planar rings, which have have twist conformations. In the crystal structure, inter­molecular C—H⋯O hydrogen bonds link the mol­ecules.
doi:10.1107/S1600536808013536
PMCID: PMC2961453  PMID: 21202638
7.  (Z)-5-(4-Fluoro­benzyl­idene)-1,3-thia­zolidine-2,4-dione 
In the title compound, C10H6FNO2S, the benzene and thia­zolidine rings make a dihedral angle of 7.52 (3)°. Intra­molecular C—H⋯O and C—H⋯S hydrogen bonds result in the formation of nearly planar five- and six-membered rings; the adjacent rings are nearly coplanar. In the crystal structure, inter­molecular N—H⋯O hydrogen bonds link the mol­ecules.
doi:10.1107/S1600536807068316
PMCID: PMC2960296  PMID: 21201543

Results 1-7 (7)