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Author Schulze Icking-Konert, G. ♦ Handschuh, H. ♦ Gantefoer, G. ♦ Eberhardt, W.
Source United States Department of Energy Office of Scientific and Technical Information
Content type Text
Language English
Subject Keyword PHYSICS ♦ CARBON MONOXIDE ♦ MOLECULAR CLUSTERS ♦ PHOTOELECTRON SPECTROSCOPY ♦ NICKEL OXIDES ♦ PLATINUM OXIDES ♦ MOLTEN METAL-WATER REACTIONS ♦ NICKEL ♦ PLATINUM ♦ METALS ♦ BONDING ♦ CHEMISORPTION ♦ SURFACES
Abstract Photoelectron spectra of mass-selected negatively charged bare Ni{sub {ital n}}{sup {minus}} and Pt{sub {ital n}}{sup {minus}} clusters are compared with the spectra of Ni{sub {ital n}}(CO){sub {ital m}} and Pt{sub {ital n}}(CO){sub {ital m}}{sup {minus}} clusters. The spectra indicate that saturation with CO is caused by the formation of an electronic closed shell and not due to steric hindrance as on a surface, and that the strength of the {pi} backdonation of the CO chemisorption bond to a small particle is stronger than to a surface. The antibonding metal ({ital d}{sub {ital z}{sup 2}}-5{sigma}) orbital resulting from the interaction of the CO 5{sigma} with the metal {ital d}{sub {ital z}{sup 2}} orbitals is directly observed for Ni{sub 1}(CO){sub 3}{sup {minus}}. {copyright} {ital 1996 The American Physical Society.}
ISSN 00319007
Educational Use Research
Learning Resource Type Article
Publisher Date 1996-02-01
Publisher Place United States
Journal Physical Review Letters
Volume Number 76
Issue Number 7


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