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The Space-Group and Molecular Symmetry of Beta-Benzenehexabromide and Hexachloride

Hendricks, Sterling B. and Bilicke, Constant (1926) The Space-Group and Molecular Symmetry of Beta-Benzenehexabromide and Hexachloride. Journal of the American Chemical Society, 48 (12). pp. 3007-3015. ISSN 0002-7863. doi:10.1021/ja01691a001.

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The small crystallographic symmetry of most organic compounds has limited the determination of their structures by crystal-structure researches. Yet many problems of structural organic chemistry can be so answered. We have determined the space-group and molecular symmetry of β-benzene hexabromide and hexachloride, and have obtained information of value in the interpretation of the geometrical isomerism of these compounds. Both benzene hexabromide, C6H6Br6 and benzene hexachloride, C6H6Cl6, crystallize in two modifications differing markedly in physical properties. The monoclinic forms, designated alpha, have been assigned the “trans” configuration. The “cis” or beta modification of the hexabromide crystallizes in the cubic system, while the hexachloride has been reported to form hexagonal crystals which are pseudocubic. Our investigation has been restricted to the beta forms.

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Additional Information:Received May 17, 1926. Published December 16, 1926. The investigation was aided financially from a grant made to Professor A. A. Noyes by the Carnegie Institution of Washington. We further wish to thank Dr. R. G. Dickinson of this Laboratory for assistance in the interpretation of the x-ray data.
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Carnegie Institution of WashingtonUNSPECIFIED
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Gates Chemical Laboratory108
Issue or Number:12
Record Number:CaltechAUTHORS:20181212-125539652
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:91733
Deposited By: Katherine Johnson
Deposited On:14 Dec 2018 21:23
Last Modified:16 Nov 2021 03:43

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