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The triazole ring of the title compound, C20H20N4O, is normal to the central benzene ring, making a dihedral angle of 90.0 (3)°, and forms a dihedral angle of 69.2 (3)° with the terminal phenyl ring. The dihedral angle between the phenyl and benzene rings is 88.2 (3)°. The atoms of the terminal propenyl group are disordered over two sets of sites, with a site-occupancy ratio of 0.663 (13):0.337 (13). In the crystal, C—H...N contacts lead to the formation of a layer structure extending parallel to (011). Two weak C—H...π inter­actions are also observed.

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The asymmetric unit of the title compound, C17H21N5O2, contains two crystallographically independent mol­ecules, which are linked by a C—H...N hydrogen bond. The morpholine rings of both mol­ecules adopt distorted chair conformations. The dihedral angles between the triazole and benzene rings are 12.8 (3)° in the first independent molecule in which the –N=C– group between the morpholine and benzene rings is disordered [site-occupancy ratio = 0.576 (7):0.424 (7)] and 88.1 (2)° in the second independent mol­ecule. In the crystal, mol­ecules are linked by C—H...N hydrogen bonds along the [100] direction. In addition, one weak C—H...π inter­action and two weak π–π stacking inter­actions [centroid–centroid distances = 3.840 (3) and 3.823 (2) Å] between the triazole rings of adjacent mol­ecules are observed. The atoms of the terminal propenyl groups in both mol­ecules are disordered over two sets of sites [site-occupancy ratios = 0.691 (10):0.309 (10) and 0.705 (15):0.295 (15)].

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The β-lactam (azetidin-2-one) ring of the title compound, C28H27N3O5, is nearly planar [maximum deviation = 0.010 (1) Å] and makes dihedral angles of 75.77 (5), 52.78 (9) and 88.72 (5)°, respectively, with the benzene ring, the least-squares plane formed by the four C atoms of the morpholine ring, which adopts a chair conformation, and the xanthene ring system. In the crystal, C—H...O hydrogen-bond contacts connect neighbouring mol­ecules into infinite zigzag chains running parallel to the b axis.

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In the title compound, C22H21N3O5, the β-lactam (azetidin-2-one) ring is nearly planar [maximum deviation = 0.010 (1) Å] and makes dihedral angles of 69.22 (5), 55.32 (5) and 89.42 (4)° with the least-squares planes formed by the four C atoms of the morpholine ring, which adopts a chair conformation, the benzene ring and the xanthene ring system, respectively. In the crystal, C—H...O hydrogen-bond contacts connect neighbouring mol­ecules into infinite zigzag chains running parallel to the b axis.

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In the title compound, C12H13N3O, the morpholine ring adopts a chair conformation and its mean plane is inclined to that of the benzene ring by 16.78 (12)°. The N-N=C-C bridge, which has an E conformation, has a torsion angle of 173.80 (19)°. In the crystal, mol­ecules stack along the a axis but there are no significant inter­molecular inter­actions present.

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In the title compound, C26H27N3O5, the β-lactam (azetidin-2-one) ring is nearly planar [maximum deviation = 0.011 (3) Å]. The mean plane formed by the four C atoms of the morpholine ring, which adopts a chair conformation, the benzene ring and the naphthalene ring system form dihedral angles of 72.85 (17), 87.46 (15) and 65.96 (11)°, respectively, with the β-lactam ring. In the crystal, molecules are linked via C—H...O hydrogen bonds, forming inversion dimers with R22(8).

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The β-lactam ring of the title compound, C23H18Cl2N2O5, is nearly planar [maximum deviation = 0.019 (2) Å for the N atom] and its mean plane makes dihedral angles of 56.86 (15), 68.83 (15) and 83.75 (15)° with the di­chloro-, nitro- and meth­oxy-substituted benzene rings, respectively. In the crystal, mol­ecules are linked by pairs of C—H...O hydrogen bonds, forming inversion dimers with R22(10) loops. The dimers are linked by further C—H...O hydrogen bonds, forming sheets lying parallel to (001). The mol­ecular packing is further stabilized by C—H...π inter­actions.

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In the title compound, C19H25N5O2, the morpholine ring has a chair conformation. The plane of the central benzene ring makes dihedral angles of 88.75 (12) and 60.02 (7)°, respectively, with the mean plane formed by the four planar C atoms of the morpholine ring and with the plane of the triazole ring. In the crystal, mol­ecules are linked via C—H...π inter­actions, forming slabs lying parallel to (10-1). The C atoms of the bridging ethyl­ene group, between the morpholine and benzene rings, and the terminal ethene group of the prop-1-ene substituent attached to the triazole ring, are disordered over two sets of sites, with an occupancy ratio of 0.634 (13):0.366 (13).

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In the title compound, C13H18N2O3, the benzene ring makes a dihedral angle of 17.19 (11)° with the least-squares plane formed by the four C atoms of the morpholine ring, which adopts a chair conformation. In the crystal, C—H...N hydrogen bonds link the mol­ecules into supramolecular chains running along a 21 screw axis parallel to the b-axis direction. Weak C—H...π inter­actions are also observed.

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The title compound, C21H22N2O, crystallizes with two independent mol­ecules in the asymmetric unit. In both mol­ecules, the anthracene ring systems are almost planar, with maximum deviations of 0.071 (8) and 0.028 (7) Å, and make dihedral angles of 73.4 (2) and 73.3 (2)° with the least-squares planes formed by the four C atoms of the morpholine rings, which adopt a chair conformation. An intra­molecular C—H...π inter­action occurs. In the crystal, the packing is stabilized by weak C—H...O hydrogen bonds, which connect pairs of molecules into parallel to the c axis, and C—H...π inter­actions.
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