Date of Award
1997
Degree Name
Chemistry
College
College of Science
Type of Degree
M.S.
Document Type
Thesis
First Advisor
J. Graham Rankin
Second Advisor
John W. Larson
Third Advisor
Michael L. Norton
Abstract
The first assignments of a number of vibrational modes to the infrared spectra of nickel and iron porphyrins are presented. The purpose of this work was to establish a library of reference spectra which can be used in the identification of geoporphyrins from coal. The infrared regions of 1700-1200 cm·' and 1200-600 cm·1 are informative and display a rich array of skeletal and alkyl substituent modes. The detailed analyses indicate that nickel and iron complexes of the four etioporphyrin (Etio) I-IV isomers exhibit notable differences at certain positions, especially in the 800-700 cm·' and 1000-900 cm·' subregions, which should enable qualitative identification of these isomers. The infrared spectra of nickel and iron complexes of 13-desethyletioporphyrin-ill and deuteroetioporphyrin-IX are quite similar to that of the corresponding Etio-ill, which is helpful for the assignment of the infrared bands. These compounds may be differentiated from other etioporphyrins and each other by the pattern of bands found in the 1050-1000 cm.
Subject(s)
Porphyrins -- Spectra.
Chemistry, Analytical.
Fourier transform infrared spectroscopy.
Recommended Citation
Xu, Kewei, "Infrared spectroscopy of nickel and iron geoporphyrins" (1997). Theses, Dissertations and Capstones. 1957.
https://mds.marshall.edu/etd/1957
