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" A study of translational diffusion constants of paramagnetic species in solution "
H. B. A. Balkhoyor
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Latin Dissertation
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| Language of Document
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English
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| Record Number
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1112927
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TLpq230732790
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| Main Entry
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H. B. A. Balkhoyor
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| Title & Author
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A study of translational diffusion constants of paramagnetic species in solution\ H. B. A. Balkhoyor
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| College
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King Fahd University of Petroleum and Minerals (Saudi Arabia)
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| Date
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1993
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| student score
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1993
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| Degree
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M.S.
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| Page No
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153
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| Abstract
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The translational diffusion constants of two paramagnetic species, dichlorobis(usd\etausd-cyclopentadienyl)vanadium, abbreviated as (Cp2VCl2) in chloroform, and S-methyl-N-usd5 usd-methoxy-salicylidenehydrazine-carbodithioatophenanthroline-oxovnadium(IV), abbreviated as VO (5-MeO-Sal SB) (Phen) in methylene chloride were measured at room temperature (25 1C) by a capillary diffusion method. The translational diffusion processes were monitored by electron spin resonance spectral intensities as a function of time. The total spectral intensities were plotted as a function of time and from the best least squares fit a single value of the translational diffusion coefficient was obtained. A computer program based on Fick's second law of diffusion for the capillary diffusion cell has been written to get a single value of the diffusion constant. It was found that Cp2VCl2 was undergoing anisotropic reorientation with N = 2.7 0.5 at an axis z = Y. In addition, the rotational correlation times as a function of temperature were determined from the line width data. (Abstract shortened by UMI.)
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Chemistry
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Pure sciences
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