Open AccessThe molecular symmetry of hexa-aminobenzene in the crystalline state, and certain other properties of the substance
Author(s) -
I. Ellie Knaggs
Publication year - 1931
Publication title -
proceedings of the royal society of london. series a, containing papers of a mathematical and physical character
Language(s) - English
Resource type - Journals
eISSN - 2053-9150
pISSN - 0950-1207
DOI - 10.1098/rspa.1931.0076
Subject(s) - hexa , molecule , symmetry (geometry) , benzene , molecular symmetry , hydrogen bond , crystallography , materials science , chemistry , computational chemistry , organic chemistry , mathematics , geometry
A benzene derivative in which six like radicles replace the six hydrogen atoms is of rare occurrence, and because of its molecular symmetry of peculiar interest in the study of organic molecules in the crystalline state. Therefore, when Flürscheim and Holmes (‘J. Chem. Soc.,’ 1929, p. 330) succeeded in preparing hexa-aminobenzene, C6 H6 H12 , the opportunity of investigating the crystals by X-rays was specially welcomed, though there were certain factors which made the crystals rather undesirable for the work. Most important, the crystals were unavoidably of so minute a size as to be suitable only for powder photographs. Further, the substance was difficult to obtain pure and was comparatively unstable in air. As will be seen in what follows, these drawbacks were partially or wholly overcome.