The nature of oxygen exchange in ZrW2O8 revealed by two-dimensional solid-state 17O NMR.
17O magic angle spinning (MAS) NMR has been used to determine the nature of oxygen exchange in ZrW(2)O(8). A highly effective isotopic labelling technique has been developed and 1D NMR and 2D exchange spectroscopy (EXSY) experiments have revealed that mutual exchange occurs between all oxygen sites, even at temperatures considerably below the alpha to beta order-disorder phase transition.
Hampson
Matthew R
MR
Department of Chemistry, University of Durham, South Road, Durham DH1 3LE, UK.
Hodgkinson
Paul
P
Evans
John S O
JS
Harris
Robin K
RK
King
Ian J
IJ
Allen
Simon
S
Fayon
Franck
F