Ab initio theoretical computations have been performed for RhN2, Rh+N2
, Rh(N-2)(2), and Rh+(N-2)(2) species. The computed vibrational freque
ncies and binding-energy trends are in qualitative accord with prior F
TIR studies of N-2 interacting with supported Rh films. Computations o
f the type described herein should be useful in aiding the assignment
of observed infrared bands to specific surface species in future work.