Mobilities and collision cross sections of Clminus;thinsp;sdot;thinsp;nH2O ions in argon, krypton, and xenon

摘要

Clustered chloride ions of the formula Clminus;thinsp;sdot;thinsp;nH2O, withnpredominantly 3 or 4, have been made in argon, krypton, and xenon, and their mobilities measured by a drift technique as a function of inert gas pressure over the range 25 to 1000 Torr. Mobilities at 296 K and inert gas densities of 2.69times;1019moleculethinsp;cmminus;3were: 2.03, 1.26, and 0.81cm2thinsp;Vminus;1thinsp;sminus;1in argon, krypton, and xenon, respectively. Comparison with theory shows that a significant inverse sixth power attractive potential is required to explain the magnitudes of the collision cross sections.