Abstract
The crystal structure of a cyclobutane derivative, 4,8-dibromo-3,7-diketo-3,4,4a,4b,7,8,8a,8b-octahydrodibenzo-[a,g]-biphenylene (C20H14O2Br2), has been determined from 1614 intensities collected with a four-circle diffractometer and refined by three-dimensional least-squares techniques. The crystals are monoclinic, space groupP21/c, with four molecules in a unit cell of dimensionsa = 10·863 ± 0·006,b = 21·060 ± 0·011,c = 7·772 ± 0·005 Å and β = 105·33 ± 0·04 °. The cyclobutane ring was found to have a bent configuration with a dihedral angle of 157 °.
Similar content being viewed by others
References
Busing, W. R. & Levy, H. A. (1967)Acta Crystallogr.,22, 457.
Greenberg, B. & Post, B. (1968)Acta Crystallogr.,B24, 918.
Ibers, J. A. (1969)Acta Crystallogr.,B25, 1667.
Kruger, G. J. & Boeyens, J. C. A. (1968)J. Phys. Chem. 61, 31.
Sutton, L. E. (1965)Tables of Interatomic Distances and Configuration of Molecules and Ions, Supplement, 1956-1959. The Chemical Society, London.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Kruger, G.J. Crystal structure of a cyclobutane derivative: 4,8-dibromo-3,7-diketo-3, 4,4a,4b,7,8,8a,8b-octahydrodibenzo- [a,g] -biphenylene. Journal of Crystal and Molecular Structure 1, 271–276 (1971). https://doi.org/10.1007/BF01200420
Received:
Issue Date:
DOI: https://doi.org/10.1007/BF01200420