Abstract
CIRCUMANTHRACENE is the largest of the polycyclic aromatics having known crystal structure. X-ray crystal structure analysis of the grey-black prismatic needles showed that they are monoclinic with a = 23.77 ± 0.01 Å, b = 4.59 ± 0.03 Å and c = 9.98 ± 0.01 Å and β = 99° 54′ ± 30′ (ref. 1). The evaporated thin film of this thirteen ring aromatic (C40H16), obtained easily by means of a vacuum sublimation, was brownish violet.
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References
Clar, E., Kelly, W., Robertson, J. M., and Rossmann, M. G., J. Chem. Soc., 3878 (1956).
Inokuchi, H., and Akamatu, H., Solid State Physics, 12, 93 (Academic Press, New York, 1961).
Inokuchi, H., Kuroda, H., and Akamatu, H., Bull. Chem. Soc. Japan, 34, 749 (1961).
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INOKUCHI, H., MATSUBARA, N., MARUYAMA, Y. et al. Electrical Conductivity of Circumanthracene. Nature 205, 64 (1965). https://doi.org/10.1038/205064a0
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DOI: https://doi.org/10.1038/205064a0
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