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Internal motion and its pressure dependence in FeSiF6+6/H2O/.Both wideline and pulsed NMR techniques were used to examine the internal motion in FeSiF6+6(H2O). Corrections of second moments for bulk paramagnetic effects were essential. At room temperature and pressure, the fluorine-fluorine contribution to the 19F second moment is 0.38 (plus or minus 0.06) G2, and indicates rapid orientation of the SiF6(--) group. Analysis of the second moment within the transition region allows calculation of an activation volume which is 2.4 (plus or minus 0.4) % of the molar volume. The application of pressure slows the internal motion such that the rigid lattice values of the 19F second moment are obtained above 50 kbar.
Document ID
19720046395
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Vaughan, R. W.
Nicolaides, G. L.
(California Institute of Technology Pasadena, Calif., United States)
Elleman, D. D.
(California Institute of Technology, Jet Propulsion Laboratory, Pasadena Calif., United States)
Date Acquired
August 6, 2013
Publication Date
May 1, 1972
Publication Information
Publication: Journal of Chemical Physics
Volume: 55
Subject Category
Chemistry
Accession Number
72A30061
Distribution Limits
Public
Copyright
Other

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