Example : CO chemisorbed on a clean Pt Surface

The RAIRS spectrum shown below was obtained for a saturation coverage of CO on a Pt surface at 300 K.

The data indicate that the majority of the CO molecules are bound in a terminal fashion to a single Pt surface atom (νCO ∼ 2090 cm-1 ), whilst a smaller number of molecules are co-ordinated in a bridging site between two Pt atoms (νCO ∼ 1870 cm-1 ).

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