THE OCCUPIED AND UNOCCUPIED ELECTRONIC-STRUCTURE OF ADSORBED FERROCENE

We have studied both the occupied and unoccupied molecular orbitals of adsorbed ferrocene. The occupied molecular orbitals have been identif ied using a combination of photoemission selection rules and resonant photoemission. Ferrocene adsorbs with a strong preferential molecular orientation on Mo(112) at 150 K, like metallocenes on many other surfa ces. Though the ferrocene molecular axis is largely parallel with the Mo(112) surface there is very little perturbation of the molecular orb itals relative to the gas phase. (C) 1998 Elsevier Science B.V.