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In the title pyrimidine derivative, C12H16N2OS, the tetrahydropyrimidine ring adopts an envelope conformation with the C atom of the methylene –CH2– group as the flap. In the crystal, N—H
O and N—HS hydrogen bonds connect molecules into undulating sheets perpendicular to the a axis.
O and N—HS hydrogen bonds connect molecules into undulating sheets perpendicular to the a axis.organic compoundsOpen access
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The asymmetric unit of the title compound, C30H22N2O6, comprises a half-molecule of the cyclobutane derivative. The least-squares planes defined by the respective C atoms of the aromatic substituents intersect at angles of 76.81 (7) and 89.22 (8)° with the least-squares plane defined by the C atoms of the cyclobutane ring. In the crystal, C—HO contacts connect the molecules into a three-dimensional network. The shortest centroid–centroid distance between the two different aromatic rings is 3.9601 (8) Å.
O contacts connect the molecules into a three-dimensional network. The shortest centroid–centroid distance between the two different aromatic rings is 3.9601 (8) Å.organic compoundsOpen access
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In the title compound, C22H15Cl2FO2, a chalcone derivative featuring a threefold-halogenated aromatic substituent, the conformation about the C=C bond is E. In the crystal C—HF and C—HCl contacts connect the molecules into undulating sheets parallel to (101). In addition, C—Hπ interactions are also present.
F and C—HCl contacts connect the molecules into undulating sheets parallel to (101). In addition, C—Hπ interactions are also present.organic compoundsOpen access
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In the title compound, C28H19BrF2O2, the C=C double bond is E-configured. In the crystal, C—HO and C—HF contacts connect molecules into planes perpendicular to the c axis. The shortest centroid–centroid distance between two aromatic systems is 3.6745 (12) Å between one of the para-fluorophenyl rings and its symmetry-generated equivalent.
O and C—HF contacts connect molecules into planes perpendicular to the c axis. The shortest centroid–centroid distance between two aromatic systems is 3.6745 (12) Å between one of the para-fluorophenyl rings and its symmetry-generated equivalent.organic compoundsOpen access
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In the title molecule, C17H18N2O2, the benzene rings form a dihedral angle of 83.0 (7)°. In the crystal, N—HO hydrogen bonds, in an R22(8) graph-set motif, link molecules into centrocymmetric dimers, and weak C—Hπ interactions further link these dimers into columns in [100].
O hydrogen bonds, in an R22(8) graph-set motif, link molecules into centrocymmetric dimers, and weak C—Hπ interactions further link these dimers into columns in [100].organic compoundsOpen access
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In the title compound, C8H9N3O3, the dihedral angle between the benzene ring and the acetohydrazide C—C(=O)—N—N plane [maximum deviation = 0.0471 (13) Å] is 87.62 (8)°. The nitro group is twisted by 19.3 (2)° with respect to the benzene ring. In the crystal, N—HO hydrogen bonds link the molecules into a double-column structure along the b axis.
O hydrogen bonds link the molecules into a double-column structure along the b axis.organic compoundsOpen access
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In the title compound, C9H12N2O, the dihedral angle between the benzene ring and the mean plane of the acetohydrazide group is 88.2 (7)°. In the crystal, N—HO hydrogen bonds and weak C—HO interactions link the molecules into infinite ribbons along [001].
O hydrogen bonds and weak C—HO interactions link the molecules into infinite ribbons along [001].
