Spectroscopic evidence for a CO-O2 complex as a precursor to the low temperature oxidation of CO on the Pt(1Â 1Â 1) surface

- A new interaction between CO and O2− on Pt(1 1 1) at 85 K is detected with RAIRS.
- The CO-O2− interaction produces a perturbed form of CO on Pt(1 1 1).
- The perturbation is due to a chemical effect rather than to vibrational coupling.
- The perturbed CO species acts as a precursor to CO oxidation at low temperature.