Temperature and density dependence of 129Xe chemical shift in rare gas mixtures

Abstract

Pulsed Fourier transform NMR spectroscopy was used to obtain ¹²⁹Xe chemical shifts in gases with densities of xenon much lower than ever before observed. At densities of 3–28 amagat, the contamination of the desired linear term in chemical shielding by contributions due to three‐body or higher order interactions is completely eliminated. This allows the determination of very precise values of σ₁(T) for ¹²⁹Xe in xenon, krypton, and argon gas.