PREPARATION OF A HIGH-QUALITY SOURCE AND REFERENCE-STANDARD FOR XE-129 MOSSBAUER-SPECTROSCOPY

Pentasodium orthoperiodate, Na5129IO6, has been prepared for use as a source in 129Xe Mössbauer spectroscopy. Raman and 127I Mössbauer spectroscopy, along with chemical analysis, were used to characterize the compound. The high recoil-free fraction and narrow line width, 7.2-7.3 mm/s, demonstrate the merits of Na5129IO6 compared to previously used sources. A high-yield preparation of the 129Xe reference standard, β-hydroquinone xenon clathrate, 3C6H4(OH)2·0.92Xe, is also described. © 1990 American Chemical Society.