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


Bilicke, Albert Constant (1927) The Space-Group and Molecular Symmetry of Beta-Benzenehexabromide and Hexachloride. Master's thesis, California Institute of Technology. doi:10.7907/KRQ9-E936.


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 hexacholoride, 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.

Item Type:Thesis (Master's thesis)
Subject Keywords:Chemistry
Degree Grantor:California Institute of Technology
Division:Chemistry and Chemical Engineering
Major Option:Chemistry
Thesis Availability:Public (worldwide access)
Research Advisor(s):
  • Unknown, Unknown
Thesis Committee:
  • Unknown, Unknown
Defense Date:1 January 1927
Other Numbering System:
Other Numbering System NameOther Numbering System ID
Gates Chemical Laboratory108
Record Number:CaltechETD:etd-12092004-113152
Persistent URL:
Related URLs:
URLURL TypeDescription as published article
Default Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:4894
Deposited By: Imported from ETD-db
Deposited On:10 Dec 2004
Last Modified:16 Aug 2023 22:01

Thesis Files

PDF (Bilicke_ac_1927.pdf) - Final Version
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