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The asymmetric unit of the title compound, C30H46N6O4, contains one half-mol­ecule. The C(benzene)—C(CH2)—N—C(—Me) torsion angle is −79.89 (13)° suggesting a synclinal orientation of the nitro­benzene ring with respect to the macrocycle. The conformation of the macrocycle is stabilized by intra­molecular N—H...N hydrogen bonds.

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In the title compound, C19H23N, the piperidine ring has a chair conformation. The phenyl rings are inclined to one another by 52.76 (16)°. One of the methyl substituents on the piperidine ring is axial while the other is equatorial, like the phenyl rings. In the crystal, mol­ecules are linked via C—H...π inter­actions, forming zigzag chains along [001].

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In the title compound, C16H14O4, there is an intra­molecular O—H...O hydrogen bond. The benzene rings are inclined to one another by 13.89 (9)°. The prop-2-en-1-one group is twisted slightly, the O=C—Car—Car (ar = aromatic) and C=C—C=O torsion angles being −10.4 (3) and −7.4 (3)°, respectively. In the crystal, mol­ecules are linked by O—H...O hydrogen bonds, forming chains along [100]. These chains are further linked by O—H...O hydrogen bonds, forming corrugated sheets lying parallel to (010). There are C—H...π inter­actions present within the sheets.

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In the title compound, C16H14O4, the benzene rings are inclined to one another by 4.91 (7)°. The conformation about the C=O and C=C bonds is trans and cis, respectively. In the crystal, mol­ecules are linked by O—H...O hydrogen bonds, forming inversion dimers with an R22(14) ring motif. The dimers are linked via O—H...O and C—H...O hydrogen bonds, forming undulating two-dimensional networks lying parallel to (10-1). These networks are linked by further C—H...O hydrogen bonds, forming a three-dimensional structure.

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In the title compound, C20H22N2O2, the piperidine ring adopts a chair conformation. The phenyl rings are inclined to one another by 80.1 (1)° and make dihedral angles of 46.1 (1) and 40.2 (1)° with the mean plane of the piperidine ring. In the crystal, pairs of N—H...O hydrogen bonds link the mol­ecules into inversion dimers. C—H...O inter­actions further link the mol­ecules, forming a three-dimensional supramolecular network.

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In the title compound, C23H18O4, the meth­oxy­benzene ring and attached C=C grouping are disordered over two sets of sites in a 0.823 (5):0.177 (5) ratio. The dihedral angles between the central benzene ring and the pendant phenyl and meth­oxy­benzene ring (major orientation) are 51.21 (1) and 51.6 (1)°, respectively. In the crystal, inversion dimers linked by pairs of C—H...O hydrogen bonds generate R22(28) loops.

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The title mol­ecular salt, C6H9N2+·C4H5O6·H2O, crystallized with two 2-amino-4-methyl­pyridin-1-ium cations, two L-(+)-tartaric acid monoanions [systematic name: (2R,3R)-3-carb­oxy-2,3-di­hydroxy­propano­ate] and two water mol­ecules in the asymmetric unit. In the crystal, the cations, anions and water mol­ecules are linked via a number of O—H...O and N—H...O hydrogen bonds, and a C—H...O hydrogen bond, forming a three-dimensional structure

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In the title compound, C20H20Cl2N2O2·H2O, the piperidine ring adopts a chair conformation with the two substituent benzene rings inclined to one another [dihedral angle 84.63 (9)°]. In the crystal, the components are linked by Ow—H...O, N—H...Ow (w = water) and C—H...O hydrogen bonds, generating a sheet structure lying parallel to (101).

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In the title compound, C26H20O3, the pyran ring has a distorted half-chair conformation and its mean plane is inclined to the naphthalene ring system, to which it is fused, by 10.79 (9)°. The dihedral angles between the napthalene unit and the benzene and phenyl rings are 54.39 (9) and 52.65 (12)°, respectively, while the benzene and phenyl rings are inclined to one another by 74.80 (14)°. There is a short C—H...O contact in the chromen-1-one unit. In the crystal, mol­ecules are linked by two pairs of C—H...O hydrogen bonds, forming inversion dimers described by graph set motifs R22(8) and R22(10), giving rise to chains running parallel to (101). The chains are linked via C—H...π inter­actions, forming sheets lying parallel to (010).
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