High-resolution solid-state 27Al and 31P NMR: correlation between chemical shift and mean Al-O-P angle in AlPO4 polymorphs

✍ Scribed by D. Müller; E. Jahn; G. Ladwig; U. Haubenreisser

• Publisher: Elsevier Science
• Year: 1984
• Tongue: English
• Weight: 408 KB
• Volume: 109
• Category: Article
• ISSN: 0009-2614
• DOI: 10.1016/0009-2614(84)85596-7

✦ Synopsis

iu final li~nn 1 Jurw 198-I "'AI and 31 I' chcnkal-shift dnta of the low-quartz. low-tridymitc and low-cristobalitc Alp04 phases were obtained I'rom .\lAS NMR spectra. In addition, qundrupok coupling data have been derived from analysis of lo\-field '7A1 NMR spectra. 'I'hc cspcrimcntd 27AI cheukd shifts wcrc corrected for quadrupolc-induced shifts. Both for the 3' P and the currcctcd "Al chcn~icsl-shift ~alws. a quantitativs corrchtion bctwccn clmnicnl shift md AI-O-P an& is found. Similaririm with the "Si NhlR data or the corresponding silicrc polymorphs arc discussed.