THE VIBRATIONAL SPECTRA OF ${SiF_{3}}^{+}$ AND ${SiF_{3}}^{-}$ TRAPPED IN SOLID NEON

Abstract

When a Ne:$SiF_{4}$ sample is codeposited at 5 K with a beam of neon atoms that has been excited by a microwave discharge, the solid deposit shows prominent infrared absorptions of ${SiF_{3}}^{+}, SiF_{3}$, and ${SiF_{3}}^{-}$. The results of ab initio calculations of the structure and ground-state vibrational fundamentals of the two ion species are presented, and support the proposed assignments.