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Digitale Medien

Crystal and molecular structure of 2-bromo-5,6-dihydro-6-methyl-4H,8H-pyrido [3,2,1-de]phenanthridin-8-one (1981)

Kartha, G. ; Fantozzi, T. D. ; Go, Kuantee ; [weitere]

Springer

Journal of chemical crystallography 11 (1981), S. 27-32

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Details

ISSN: 1572-8854

Quelle: Springer Online Journal Archives 1860-2000

Thema: Geologie und Paläontologie , Physik

Notizen: Abstract Crystals of the title compound, C17H14BrNO, are monoclinic, with space groupP21/a,a = 14.314(5),b = 15.009(11),c = 6.596(3) Å, and β = 102.39(3) °. Diffraction data were collected with CuKα radiation to a Bragg angle of 77 °. The structure was solved by the heavy-atom method and refined to anR index of 0.059 for 2129 reflections. In agreement with NMR results, the C=O group is orientedanti to the benzene ring, and the methyl group at C(6) is axial. Unlike 1-(p-bromobenzoyl)-2-methyl-1,2,3,4-tetrahydroquinoline, the heterocyclic ring assumes a well defined half-chair conformation. Except for C(5) and the methyl group at C(6), the whole molecule is very nearly planar.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1007/BF01645346

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