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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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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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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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