Observation of the Rydberg states of nitric oxide trapped in an argon matrix

Three new progressions consisting of broad bands (full width at half max. .simeq. 130 meV) were obsd. in the absorption spectrum of NO trapped in an Ar matrix. A Wannier model fails to describe these transitions; they are identified as the mol. Rydberg transitions A2S+, C2P, and D2S+-X2P(v',0), blue shifted with respect to their gas-phase positions by .apprx.0.85 eV. [on SciFinder (R)]