Plots of the Spin-Lattice Relaxation Time and Nuclear Overhauser Enhancement NMR Values Yielding a Spread Distribution of the Rotational Correlation Time

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Title:Plots of the Spin-Lattice Relaxation Time and Nuclear Overhauser Enhancement NMR Values Yielding a Spread Distribution of the Rotational Correlation Time
Creators:
Jakeš, Jaromír
Journal or Publication Title:
Collection of Czechoslovak Chemical Communications, 65, 10, pp. 1537-1558
Uncontrolled Keywords:Molecular dynamics, Rotational autocorrelation function, Nuclear magnetic resonance, Nuclear Overhauser enhancement, Graphical correlation, Polymer chain segmental motions, Spin-lattice relaxation, NMR spectroscopy

Abstract

It is shown, that the plots of ω/<i>T</i><sub>1</sub> and NOE × ω/<i>T</i><sub>1</sub> <i>versus</i> -log ω give the distribution of rotational correlation time τ plotted <i>versus</i> log τ and spread by (rather wide) "slit" functions the form and shape of which are independent of the position on the log τ axis. When plotting data at various temperatures, temperature shift factors <i>a<sub>T</sub></i> and the plots <i>versus</i> -log (ω<i>a<sub>T</sub></i>) should be used. The plots permit to check the data compatibility and are helpful in studying molecular dynamics. Examples of the plots are given. One example stimulated a consideration of the segmental motion dynamics, which showed that the Hall-Helfand distribution is inappropriate for a description of the orientational relaxation of the non-backbone (C-H) bonds in a polymer chain. <p>

Title:Plots of the Spin-Lattice Relaxation Time and Nuclear Overhauser Enhancement NMR Values Yielding a Spread Distribution of the Rotational Correlation Time
Creators:
Jakeš, Jaromír
Uncontrolled Keywords:Molecular dynamics, Rotational autocorrelation function, Nuclear magnetic resonance, Nuclear Overhauser enhancement, Graphical correlation, Polymer chain segmental motions, Spin-lattice relaxation, NMR spectroscopy
Divisions:Life and Chemical Sciences > Institute of Organic Chemistry and Biochemistry > Collection of Czechoslovak Chemical Communications
Journal or Publication Title:Collection of Czechoslovak Chemical Communications
Volume:65
Number:10
Page Range:pp. 1537-1558
ISSN:0010-0765
E-ISSN:1212-6950
Publisher:Institute of Organic Chemistry and Biochemistry
Related URLs:
URLURL Type
http://dx.doi.org/10.1135/cccc20001537UNSPECIFIED
ID Code:1737
Item Type:Article
Deposited On:06 Feb 2009 17:12
Last Modified:06 Feb 2009 16:12

Citation

Jakeš, Jaromír (2000) Plots of the Spin-Lattice Relaxation Time and Nuclear Overhauser Enhancement NMR Values Yielding a Spread Distribution of the Rotational Correlation Time. Collection of Czechoslovak Chemical Communications, 65 (10). pp. 1537-1558. ISSN 0010-0765

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