عنوان

A study of translational diffusion constants of paramagnetic species in solution

Number

TLpq230732790

.Language of Text, Soundtrack etc

انگلیسی

Title Proper

A study of translational diffusion constants of paramagnetic species in solution

General Material Designation

[Thesis]

First Statement of Responsibility

H. B. A. Balkhoyor

Name of Publisher, Distributor, etc.

King Fahd University of Petroleum and Minerals (Saudi Arabia)

Date of Publication, Distribution, etc.

1993

Specific Material Designation and Extent of Item

153

Dissertation or thesis details and type of degree

M.S.

Body granting the degree

King Fahd University of Petroleum and Minerals (Saudi Arabia)

Text preceding or following the note

1993

Text of Note

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.)

Chemistry

Pure sciences

H. B. A. Balkhoyor

Electronic name

p

[Thesis]

276903

a

Y