Carbon-end bonding of CO to Pt can combine donation from a molecular sigma orbital with metal-to-CO pi back-donation. The resulting hybridization and local-potential changes can shift the Pt core binding energy and modify the molecule's vibrational spectrum. A measured core-level shift includes core-hole screening and does not uniquely specify a net transferred charge.
Articles by others on the same topic
Chemisorption, or chemical adsorption, is a process in which a gas or liquid molecule forms a strong chemical bond with a solid surface. This interaction typically involves the formation of covalent or ionic bonds, resulting in a more permanent attachment of the adsorbate (the molecule being absorbed) to the adsorbent (the solid surface).