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Internal rotation in the H5O2+ ion: A quasielastic neutron scattering study of 12-tungstophosphoric acid hexahydrate

✍ Scribed by Helen A. Pressman; Robert C.T. Slade

Book ID: 103028336
Publisher: Elsevier Science
Year: 1988
Tongue: English
Weight: 657 KB
Volume: 151
Category: Article
ISSN: 0009-2614
DOI: 10.1016/0009-2614(88)85149-2

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✦ Synopsis

Variable temperature quasielastic neutron scattering studies have been used to investigate motions in 12-tungstophosphoric acid hexahydrate (H3PW1&6H20).

A twoford reorientation (180" flip) of "terminal waters" within centrosymmetric H,O$ ions has been identified and the results of a previous NMR study reinterpreted. The activation energy and Arrhenms prefactor for the reorientation are 14 kJ mol-' and 6x.1 OF" s, respectively.

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