Knowledge Bank

When NO, $NO2$, or $N20$, mixed with a large excess of neon, is codeposited at a temperature approaching 4 K with a beam of neon atoms which has been excited in a microwave discharge, a number of monomer and dimer ions are isolated in the solid. Isotopic substitution experiments support the identification of infrared absorptions of such species as $NO+,N2O+,NO3-$, and at least two isomeric forms of $N2O2-$. A survey of these results will be presented, and the magnitude of the matrix shift for such species trapped in solid neon will be considered