17O NMR in simple oxides

High temperature 17O MAS NMR study of calcia, magnesia, scandia and yttria stabilized zirconia

“…1a), as reported in an earlier study [15]. The assignment of these peaks is still ambiguous although they were previously attributed to the four and to the three coordinated oxygen, respectively [15].…”

“…Bond distance correlations suggest that the two peaks of monoclinic ZrO 2 (325 and 402 ppm) can perhaps be assigned to oxygens with three and four Zr neighbors, the reverse of a tentative early assignment [15]. Oxide ions with all Ca neighbors could be represented by pure CaO, where the chemical shift is 294 ppm [19], although the rocksalt-type structure of this phase is of course not the same as that of zirconia.…”

Solid State NMR Interaction Parameters of Oxygens Linking Titanium and Silicon in Crystalline Cyclic Titanodiphenylsiloxanes

“…17 O NMR holds significant promise for characterizing the chemical environment of oxygen in such materials and probes directly Ti-O-Si linkages. Indeed, oxygen-17 (nuclear spin, I = 5/2) has already been used to study the local structure of a variety of inorganic solids (e.g., [13,14]). Its NMR parameters have been shown to be very sensitive to structure.…”

Solid-state 17O nuclear magnetic resonance spectroscopy without isotopic enrichment: direct detection of bridging oxygen in radiation damaged zircon

“…The observation of 17 O in natural abundance in inorganic solids has been previously reported by Bastow [6] using conventional single pulse spectroscopy with experiment times of approximately 24 h. This work was restricted to compounds with fairly symmetric oxygen environments and to non-proton containing materials.…”