Abstract
THE crystal structure of 9 :10-dimethyl-1 : 2-benzanthracene (DMBA) was determined by Sayre and Friedlander1 and they refined the atomic co-ordinates by means of the method of three-dimensional least-squares with isotropic thermal parameters. They found that the molecule was far from planar, and in particular the benzene ring (Fig. 1, ring D) was inclined to the mean plane at approximately 20°. (The crystals are orthorhombic with a = 7.62, b = 8.62, c = 21.11 Å; space group P21nb; 4 mol. per unit cell.)
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References
Sayre, D., and Friedlander, P. H., Nature, 187, 139 (1960).
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IBALL, J. A Refinement of the Structure of 9:10-Dimethyl-1:2-benzanthracene. Nature 201, 916–917 (1964). https://doi.org/10.1038/201916b0
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DOI: https://doi.org/10.1038/201916b0
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