The Crystal Structures of Some Organic Molecules

Bryan, Robert F (1957) The Crystal Structures of Some Organic Molecules. PhD thesis, University of Glasgow.

Abstract

This thesis describes crystallographic and other work carried out during the past three years, in the laboratories of Professor J. M. Robertson, under the supervision of Dr. J. C. Speakman It is divided into two parts. Part One describes work on the structure of two acid salts of cinnamic acid, and is sub-divided into three sections. Section One contains some remarks on the nature of the hydrogen bonding found in acid salts of the type MHA2 , with especial reference to the infra-red spectra of the acid cinnamates, an interpretation of which is attempted. Sections Two and Three, deal with work on the structures of potassium and ammonium hydrogen dicinnamates. Use was made of the Isomorphous Replacement method of phase determination, and the structure of the ammonium salt has been elucidated by two dimensional Fourier methods and refined by (Fo - Fc) syntheses. Bond lengths and angles etc. are given and discussed. Part Two contains the results of an investigation of some members of the homologous series of para-alkoxybenzoic acids. Section One gives a list of the cell constants for the acids between para-methoxybenzoic acid, and para-nonyloxy-benzoic acid, which have been determined by X-ray methods. Section Two describee an analysis by two dimensional Fourier methods of para-methoxybenzoic acid. This analysis though terminated prematurely, has reached a fair degree of precision, and bond lengths and angles etc. are given and discussed. Section Three gives details of a preliminary analysis, by the Fourier transform method,of the structure of para-ethoxybenzoic acid, which has been elucidated in (h01) projection.

• Item Type: Thesis (PhD)
• Qualification Level: Doctoral
• Keywords: Physical chemistry, Molecular chemistry, Organic chemistry
• Date of Award: 1957
• Depositing User: Enlighten Team
• Unique ID: glathesis:1957-79239
• Copyright: Copyright of this thesis is held by the author.
• Date Deposited: 05 Mar 2020 11:25
• Last Modified: 05 Mar 2020 11:25
• URI: https://theses.gla.ac.uk/id/eprint/79239