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  • Küçük Resim
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    3,3-dichloro-1,4-diphenylazetidin-2-one
    (Munksgaard Int Publ Ltd, 1999) Kabak, M; Elerman, Y; Guner, V; Yildirir, S; Durlu, TN
    In the crystal structure of the title compound, C15H11C12NO, the Cl-C-Cl plane is nearly perpendicular to the four-membered beta-lactam ring [89.0 (2)degrees] and the C-C bond distances in this group are 1.571 (6) and 1.543 (7) Angstrom. The most out-of-plane atom from the best plane of the lactam ring is the carbonyl C atom [-0.029 (5) Angstrom]. The dihedral angle between the best planes of the phenyl rings is 77.4 (2)degrees.
  • Küçük Resim
    Öğe
    3,3-Dichloro-1-(p-chlorophenyl)4-(p-methoxyphenyl)-2-azetidinone
    (Wiley-Blackwell, 1999) Kabak, M; Elerman, Y; Guner, V; Yildirir, S; Durlu, TN
    The crystal structure of the title compound, C16H12Cl3NO2, has a nearly planar beta-lactam ring with the N atom out of the best plane by 0.032(2) Angstrom. The C-C bond distances in the beta-lactam ring are 1.544(4) and 1.568(4) Angstrom. The chlorophenyl and methoxyphenyl rings are nearly perpendicular to one another [81.92(7)degrees].
  • [ X ]
    Öğe
    N-(p-chlorophenyl)-3,3-diphenyl-4-(β-phenylstyryl)azetidin-2-one
    (Munksgaard Int Publ Ltd, 2000) Kabak, M; Elerman, Y; Guner, V; Durlu, TN
    In the title compound, C35H26ClNO, the four-membered beta-lactam ring is essentially planar, with a maximum deviation of 0.012 (1) Angstrom for the N atom. The C-C bond lengths in the beta-lactam ring are 1.591 (2) and 1.549 (2) Angstrom. The two phenyl rings attached to the beta-lactam ring are nearly perpendicular to each other [83.2 (1)degrees].
  • Küçük Resim
    Öğe
    Structure and conformation of 2,3,4-triphenyl-1-oxa-4-azabutadiene
    (Elsevier Science Bv, 2000) Guner, V; Kabak, M; Elerman, Y
    2,3,4-triphenyl-1-oxa-4-azabutadine (C20H15NO) has been studied by X-ray analysis and AMI molecular orbital methods. It crystallises in the triclinic space group P-l with a = 9.414(3), b = 10.479(3), c = 8.385(2) Angstrom, alpha = 103.31(3)degrees beta = 97.10(3)degrees, gamma = 74.09(1)degrees, V = 772.5(4) Angstrom(3), Z = 2, D-c = 1.227 g cm(-3), and mu(MoK alpha) = 0.075 mm(-1) and F-000 = 300. The structure was solved by direct methods and refined to R = 0.043 for 2672 reflections [I > 2 sigma(1)]. The conformational analysis of the title compound were investigated by semi-empirical quantum mechanical AM1 calculations. The minimum conformation energies were calculated as a function of the three torsion angles theta(1)(O(1)C(7)C(8)N( 1)), theta(2)(C(8)N(1)C(IS)C(16)) and theta(3)(C(14)C(9)C(8)N(1)). The results are compared with the X-ray results. C=O and C=N groups are twisted about each other by 95.5(2)degrees. (C) 2000 Elsevier Science B.V. All rights reserved.