Dipole forbidden vibrational modes for NO and CO on Cu observed in the far IR.

摘要

IRRAS spectra of NO/Cu(111) and ((radical)3 (times) (radical)3)R30(degrees) coverage of CO/Cu(111) in the range 3000--180 cm(sup (minus)1) show both the adsorbate internal modes and features assigned to the hindered rotational modes. These dipole-forbidden features are characterized by asymmetric (mostly negative) absorption lineshapes and are accompanied by a change in broadband absorption. The shape and intensity of this broadband absorption is well accounted for by a scattering model. (ERA citation 19:005811)