N. Binesh et al., H-1 MAS NMR-STUDY OF PROTONIC CONDUCTION IN LAYERED HNBWO6-CENTER-DOT-XH(2)O (X=1.5, 0.5), Solid state ionics, 86-8, 1996, pp. 609-611
H-1 Magic Angle Spinning (MAS) NMR of layered HNbWO6 . xH(2)O (x = 1.5
, 0.5) is carried out at room temperature and at various spinning spee
ds (1-12 kHz). Results on the fully hydrated sample (x = 1.5) are cons
istent with the model of diffusion of H3O+ ions within the layers. In
the partially dehydrated sample (x = 0.5) an exchange between the dist
inctly present cage protons and H3O+ protons leads to protonic conduct
ion.