Studies in Crystal Structure. Part I: alpha-Ethynylacetic Acid. Part II: n-Hexatriacontane

Shearer, Harrison M. M (1954) Studies in Crystal Structure. Part I: alpha-Ethynylacetic Acid. Part II: n-Hexatriacontane. PhD thesis, University of Glasgow.

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Abstract

The first part of this thesis describes an investigation, by X-ray methods, of ethynylacetic acid (prop-2-yne-1-carboxylic acid). The acid was found to exist in two crystal forms and one of these - the alpha-form - was studied in some detail. The dimensions of the two crystallographically independent molecules in the unit cell were obtained from projections along two of the cell axes and more accurate values of the molecular parameters were found by a process of averaging. An attempt was then made to determine the nature of the acetylenic carbon-hydrogen bond at the end of the molecular chain, Part 2 describes an investigation of the monoclinic form of n-hexatriacontane. The signs of the reflecting planes in two of the lattice zones were obtained by means of sub-cell theory and the molecular structure was determined from projections down two of the cell axes. By assuming a regular repetition along the hydrocarbon chain, the molecular dimensions were determined with greater accuracy.

Item Type: Thesis (PhD)
Qualification Level: Doctoral
Keywords: Organic chemistry, Physical chemistry
Date of Award: 1954
Depositing User: Enlighten Team
Unique ID: glathesis:1954-79095
Copyright: Copyright of this thesis is held by the author.
Date Deposited: 31 Mar 2020 09:09
Last Modified: 31 Mar 2020 09:09
URI: http://theses.gla.ac.uk/id/eprint/79095

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