5-Bromo-17-nitro-26,28-prop-2-enoxy-25,27-dipropoxycalix[4]arene
نویسندگان
چکیده
Mol-ecules of the title compound, C(40)H(42)BrNO(6), are located on a crystallographic twofold rotation axis. As a result, the nitro group and bromine residue are mutually disordered with equal occupancies. The prop-oxy-substituted aromatic rings are close to parallel to each other [dihedral angle = 21.24 (1)°], whereas the propen-oxy-substituted rings enclose a dihedral angle of 70.44 (1)°. The dihedral angles between the methyl-ene C atoms and the aromatic rings shows that the propen-oxy substituted rings are bent away from the calixarene cavity [dihedral angle between the planes = 35.22 (8)°], whereas the prop-oxy-substituted rings are almost perpendicular [79.38 (10)°] to the plane of the methyl-ene C atoms.
منابع مشابه
5,17-Dibromo-26,28-bis[(methoxycarbonyl)methoxy]-25,27-dipropoxy-2,8,14,20-tetrathiacalix[4]arene
The title thia-calix[4]arene derivative, C(36)H(34)Br(2)O(8)S(4), adopts an unusual pinched cone conformation with the prop-oxy-substituted benzene rings inclined inward [forming a dihedral angle of 33.4 (1)°] and with the brominated benzene rings bent outward, making a dihedral angle of 66.1 (1)°. In the crystal, the mol-ecules form chains along [001] via C-H⋯S hydrogen bonds and S⋯S contacts ...
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Mol-ecules of the title compound, C(40)H(44)O(8), adopt a partial cone conformation. The dihedral angles between the planes of the aromatic rings and the mean plane through the methyl-ene C atoms bridging the aromatic rings are 35.74 (7), 85.86 (5), 87.77 (4) and 89.95 (5)°. Two opposite aryl rings are approximately parallel to each other; the others are at an inter-planar angle of 52.41 (6)°. ...
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