The structure of a tetrabromotetrahydrodibenzocyclooctene |
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| Authors: | Tamara R Nauman Mark L McLaughlin Frank R Fronczek Steven F Watkins |
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| Institution: | (1) Department of Chemistry, Louisiana State University, 70803-1804 Baton Rouge, Louisiana |
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| Abstract: | 5, 6, 11, 12-Tetrabromo-5, 6, 11, 12-tetrahydrodibenzoa, e]cyclooctene, C16H12Br4, crystallizes in monoclinic space group P21/c witha=8.6917(7),b=15.135(2),c=12.892(2) Å,  =101.836(8)°, V=1660.0(7) Å3,Z=4. The structure was refined toR=0.058 for 3137 observed reflections. The molecule has approximate C2 symmetry, with the eight-membered ring adopting the twist-boat conformation. The planes of the two phenyl rings form a dihedral angle of 117.3(2)°, C–Br distances range 1.965(5)–1.981(5) Å. |
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| Keywords: | 8-Ring conformation |
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