Abstract
IN a recent paper1, Krishnan and Banerjee have described a new crystalline modification of the carcinogenic hydrocarbon 1: 2: 5: 6-dibenzanthracene. By means of optical measurements, they show that the crystals are different from the monoclinic variety already known and examined by means of X-rays2. In this laboratory similar crystals have been obtained in the way described by the above authors from a solution in ethyl acetate, and they have now been examined by X-rays. The crystals are exceptionally well developed, having more or less uniform dimensions in all directions and show brilliant faces.
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References
Z. Krist., 91, 170 (1935).
Iball and Robertson, NATURE, 132, 750 (1933).
Z. Krist., 91, 173 (1935).
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IBALL, J. X-Ray Analysis of the Orthorhombic Crystalline Modification of I: 2: 5: 6-Dibenzanthracene. Nature 137, 361 (1936). https://doi.org/10.1038/137361b0
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DOI: https://doi.org/10.1038/137361b0
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