University of Illinois Urbana-Champaign

Magnetic Resonance Studies of Molybdenum and Chromium Compounds

Gurnick, Mary Kolor

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Description

Title
Magnetic Resonance Studies of Molybdenum and Chromium Compounds
Author(s)
Gurnick, Mary Kolor
Issue Date
1982
Department of Study
Chemistry
Discipline
Chemistry
Degree Granting Institution
University of Illinois at Urbana-Champaign
Degree Name
Ph.D.
Degree Level
Dissertation
Keyword(s)
Chemistry, Physical
Abstract
  • Electron Paramagnetic Resonance spectra are presented for the Mo(III) ion substituted into three metal hexaurea triiodide hosts. Two of the hosts, vanadium and titanium, hexaurea triiodide are paramagnetic. Spectra typical of a spin 3/2 ion are observed at Q-band frequencies. Some structural information pertaining to the molybdenum hexaurea triiodide and molybdenum hexaurea tribromide ions is also presented. The former is found to be isomorphic with most metal hexaurea compounds while the latter forms a monoclinic cell with a space group C2/c.
  • EPR data is also presented for Cr(III) pairs in the aluminum hexaurea triiodide host. Spectra are fit assuming an exchange and dipolar interaction between axial pairs.
  • In addition, the distribution of DPPH in polystyrene thin films, prepared by a spin-coating technique, was probed with EPR in order to substantiate claims of large energy transfer distances in these films.
  • Computer programs are presented for the simulation of EPR spectra using the method of eigenfields. The programs are set up to calculate the general problem of one moment or of two interacting moments.
  • Finally, the NMR of Mo(V) complexes with polyphosphates and ATP is presented and possible geometries of complexes in solution discussed.
Graduation Semester
1982
Type of Resource
text
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http://hdl.handle.net/2142/70183

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