High-field 127I NMR of solid sheelite structures: periodates revisited.
نویسندگان
چکیده
We report new solid-state 127I NMR results for sheelite periodates, MIO4 (M = Na+, K+, Rb+, and NH4+), and for pseudo-scheelite CsIO4 and HIO4. The observed 127I quadrupole coupling constants were between 1.0 and 43.0 MHz in agreement with previous NQR data. In contrast to an early 127I NMR study (S. L. Segel and H. M. Vyas, 1980, J. Chem. Phys. 72, 1406), we found that the 127I chemical shift anisotropy is negligibly small in sheelite periodates. A small but definite 127I chemical shift tensor was observed for pseudo-scheelite CsIO4.
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عنوان ژورنال:
- Solid state nuclear magnetic resonance
دوره 20 3-4 شماره
صفحات -
تاریخ انتشار 2001