organic compounds
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In the title compound, C24H25N3O5, the ethoxy group is disordered over two orientations in a 0.853 (14):0.147 (14) ratio. The benzimadazole ring system (r.m.s. deviation = 0.016 Å) makes a dihedral angle of 35.47 (7)° with the attached benzene ring. The pyrrolidine ring adopts an envelope conformation with a methylene C atom as the flap. In the crystal, inversion dimers linked by pairs of O—HN hydrogen bonds generate R22(16) loops. C—HO interactions link the dimers into a three-dimensional network.
organic compounds
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The molecular structure of the title compound, C12H19NO5, may be visualized as made up of two nearly perpendicular planes [dihedral angle = 87.39 (12)°] and its crystal structure is a good example of C—HO interactions assuming significance in optimizing supramolecular aggregation in crystals in a molecule which is severely imbalanced in terms of donors to acceptor atoms. The pyrrolidine ring adopts a (3T2) twist conformation with puckering parameters Q = 0.2630 (4) Å and φ = 59 (9)°. The crystal structure features R24(10) and R34(26) ring motifs formed by four weak C—HO interactions, leading to supramolecular sheets lying parallel to the bc plane.
organic compounds
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The asymmetric unit of the title compound, C29H24FNO5·0.5CH3OH, contains two independent molecules and a one methanol solvent molecule. The methanol molecule is O—HO hydrogen bonded to one of the independent molecules. The pyrrolidine rings in both molecules adopt half-chair conformations, while the cyclopentane rings within the indane groups are in flattened envelope conformations, with the spiro C atoms forming the flaps. The benzene rings of the indane ring systems form a dihedral angle of 35.06 (7)° in one independent molecule and 31.16 (8)° in the other. The fluoro-substituted benzene ring forms dihedral angles of 65.35 (6) and 85.87 (7)° with the indane group benzene rings in one molecule, and 72.78 (8) and 77.27 (8)° in the other. In each molecule, a weak intramolecular C—HO hydrogen bond forms an S(6) ring motif. In the crystal, weak C—HO, C—HN and C—HF hydrogen bonds link the molecules into a three-dimensional network.
organic compounds
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In the title compound, C24H23N3O2, the benzimidazole ring system makes dihedral angles of 7.28 (5) and 67.17 (5)°, respectively, with the planes of the benzene and phenyl rings, which in turn make a dihedral angle of 69.77 (6)°. In the crystal, molecules are connected by C—HN and C—HO interactions, forming a layer parallel to the bc plane. A π–π interaction, with a centroid–centroid distance of 3.656 (1) Å, is observed in the layer.
organic compounds
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In the title compound, C28H27FN4O3·H2O, the benzimidazole ring system is essentially planar with a maximum deviation of 0.028 (1) Å. It makes dihedral angles of 47.59 (5) and 60.31 (5)°, respectively, with the pyridine and benzene rings, which make a dihedral angle of 22.58 (6)° with each other. The pyrrolidine ring shows an envelope conformation with one of the methylene C atoms as the flap. In the crystal, the components are connected into a tape along the b-axis direction through O—HO and O—HN hydrogen bonds and a π–π interaction between the pyridine and benzene rings [centroid–centroid distance of 3.685 (8) Å]. The tapes are further linked into layers parallel to the ab plane by C—HO and C—HF interactions.
organic compounds
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In the title compound, C17H22FNO4, the pyrrolidine ring adopts an envelope conformation with the disordered components of the methylene C atom, with site occupancies of 0.896 (7) and 0.104 (7), being the flap on either side of the mean plane involving the other atoms of the ring. The carboxylic acid group forms dihedral angles of 72.06 (11) and 45.44 (5)° with the N-tert-butoxycarbonyl group and the 2-fluorobenzyl group, respectively. In the crystal, two-dimensional layers of molecules parallel to (001) are built through an R44(23) motif generated via O—HO, C—HO and C—HF interactions, and an R22(11) motif generated by C—HO and C—HF interactions.
organic compounds
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The asymmetric unit of the title compound, C22H18N4O2S2, contains two molecules. In one of them, the dihedral angles between the central benzene ring and the phenyl rings are 16.97 (8) and 20.97 (8)°, while the phenyl rings make a dihedral angle of 37.87 (8)°. In the other molecule, the corresponding values are 34.92 (7), 53.90 (7) and 60.68 (8)°, respectively. In each molecule, two intramolecular N—HO hydrogen bonds generate S(6) rings and a short C—HS contact also occurs. In the crystal, N—HS, N—HO, C—HO and C—HS interactions link the molecules into a three-dimensional network.