organic compounds
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In the title compound, C26H27ClN3O3P, the mean plane of the central pyrazole ring forms a dihedral angle of 71.37 (14)° with the chlorophenyl ring. In the crystal, molecules are linked by pairs of N—HO hydrogen bonds, forming inversion dimers with R22(10) ring motifs. The 3-phenyl ring is disordered with four C atoms occupying two sets of sites with an occupancy ratio of 0.748 (4):0.252 (4).
organic compounds
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In the title compound, C16H13NO2, the isoxazole ring makes dihedral angles of 17.1 (1)° with the 3-methoxyphenyl ring and 15.2 (1)° with the phenyl group. Centrosymmetric dimers that are realised by pairs of C—Hπ interactions are observed in the crystal structure.
organic compounds
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In the title compound, C16H15BrN2O4, the six-membered carbocyclic ring of the chromene moiety adopts an envelope conformation with the disordered methylene C atom as the flap. The pyran ring is almost orthogonal to the chlorophenyl ring, making a dihedral angle of 87.11 (12)°. The amine-group N atom deviates significantly from the pyran ring [0.238 (3) Å]. The molecular structure is stabilized by an intramolecular N—HO hydrogen bond, which generates an S(6) ring motif. In the crystal, molecules are linked via C—HO hydrogen bonds, which generate C(8) chains running parallel to the b axis. The chains are linked by C—Hπ interactions. The methylene-group C atom of the chromene system that is disordered, along with its attached H atoms and the H atoms on the two adjacent C atoms, has an occupancy ratio of 0.791 (7):0.209 (7).
organic compounds
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The title compound, C16H15ClN2O4, contains a chiral centre and crystallizes as a racemate. The methylene group β-positioned to the carbonyl group is partially (21%) disordered. It flips to the opposite sides of the corresponding six-membered carbocycle by −0.304 (3) and 0.197 (11) Å, producing alternative envelope conformations. The planes of the pyran and chlorophenyl rings form a dihedral angle of 86.25 (9)°. The molecular structure is characterized by an intramolecular N—HO interaction, which generates an S(6) ring motif. The corresponding amino N atom deviates from the plane of the pyran ring by 0.1634 (19) Å. In the crystal, molecules are linked via C—HO hydrogen bonds, forming C(8) chains running parallel to the b-axis direction. The crystal structure also features C—Hπ interactions.
organic compounds
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In the title compound, C19H14N2O5, the spiro junction links an oxindole moeity and a furan ring, which subtend a dihedral angle of 83.49 (6)°. The molecular structure features an N—HO hydrogen bond, which generates an S(6) ring motif. The crystal packing is governed by two N—HO interactions, one of which generates a centrosymmetric R22(14) dimer. The other N—HO interaction along with a C—HO hydrogen bond contributes to the formation of a C22[R22(9)] dimeric chain running along the b-axis direction.
organic compounds
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In the title compound, C31H25N5O3·C2H6OS, the three indole/indoline units are all essentially planar with maximum deviations of 0.0172 (3), 0.053 (2) and 0.07 (2) Å. The pyrrolidine ring adopts an envelope conformation with the C atoms bearing the 1-ethyl-2-oxoindole substituent (in which the five-membered ring adopts a twisted conformation) as the flap. The dimethyl sulfoxide solvent molecule is disordered over two positions, with an occupancy factor ratio of 0.871 (4):0.129 (4). The solvent components are linked to the heterocyclic molecule via C—HO and C—HS hydrogen bonds. In the crystal, the solvent components are linked to the heterocyclic molecule via C—HO and C—HS interactions, forming R22(10) ring motifs. The molecules are further connected into a chain along the a-axis direction via N—HO hydrogen bonds.
organic compounds
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The title compound, C16H15N3O6, is asymmetric with a chiral centre located in the pyran ring and crystallizes as a racemate. The six-membered carbocyclic ring adopts an envelope conformation with the central CH2 C atom as the flap. The amine N atom deviates from the mean plane of the pyran ring by 0.1365 (15) Å. The nitrophenyl ring is almost orthogonal to the pyran ring and the mean plane of the six-membered carbocyclic ring, the dihedral angle between their mean planes being 88.30 (7) and 87.61 (8)°, respectively. The molecular structure is stabilized by an intramolecular N—HO hydrogen bond, which generates an S(6) ring motif. In the crystal, molecules are linked via C—HO hydrogen bonds, forming infinite bands lying parallel to (-110) and composed of alternate R22(24) and R24(12) graph-set ring motifs. The crystal structure is further stabilized by C—Hπ interactions, forming a three-dimensional structure.
organic compounds
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In the title compound, C25H20N6O2·0.15H2O, the dihedral angles between the least-squares planes of the indole and pyrrolidine rings and between the oxindole and imidazole rings are 77.66 (7) and 45.31 (7)°, respectively. The pyrrolidine ring and the fused five-membered pyrrolidine ring of the oxindole moiety exhibit twisted conformations. The amide N atom is involved in both intra- and intermolecular hydrogen bonding, having a bifurcated character. The molecular structure is characterized by an intramolecular N—HO hydrogen bond, which generates an S(7) ring motif while an intermolecular N—HO hydrogen bond links the organic and solvent water molecules. In the crystal, N—HN hydrogen bonds generate a zigzag chain running parallel to c-axis direction. The H atoms of the solvent water molecule were not located.
organic compounds
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In the title compound, C26H20N4O2S, the central pyrrolidine ring adopts a twist conformation on the C—C bond involving the spiro C atom. Its mean plane makes dihedral angles of 78.83 (14), 65.91 (15) and 44.49 (18)° with the mean planes of the adjacent oxindole ring system, the indole system and the thiophene ring, respectively. The indole and indoline units are essentially planar, with maximum deviations of 0.019 (3) and 0.090 (3) Å, respectively. In the oxindole fused-ring system, the pyrrole ring adopts an envelope conformation with the spiro C atom as the flap. In the crystal, pairs of N—HO hydrogen bonds link the molecules, forming inversion dimers with an R22(8) ring motif. The dimers are linked by further N—HO hydrogen bonds, forming a two-dimensional network lying parallel to (100).