Water adsorption on Pt and Cu surfaces

Adsorbate Electronic Structure and Bonding on Metal Surfaces 

By carefully tuning the excitation photon energy, we can use XES to selectively observe the occupied electronic states projected on the oxygen atom of, respectively, 

The chemical bonding to the surface is achieved via orbitals of ax symmetry. The adsorbate-substrate hybrid levels exhibiting mainly metal character are represented by the a, states. It has been shown that backdonation into the previously unoccupied ammonia 4at orbital, and a simultaneous 3a, donation into the substrate, plays an important role in the surface chemical bond [112]. 

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