Structural evidence for chemical contributions in the bonding of the heavy rare gases on a close-packed transition metal surface: Xe and Kr on Ru(001)

Björn Narloch; Dietrich Menzel

doi:10.1016/S0009-2614(97)00327-8

Structural evidence for chemical contributions in the bonding of the heavy rare gases on a close-packed transition metal surface: Xe and Kr on Ru(001)

Björn Narloch, Dietrich Menzel

Chair of Experimental Physics

Technical University of Munich

Research output: Contribution to journal › Article › peer-review

48 Scopus citations

Abstract

We have determined the geometries of two ordered structures of Xe and Kr on Ru(001) by LEED-IV analysis, of the (√3 × √3)R30°-Xe and the close-packed (3 × 3)-Kr structures. The Xe atoms sit on-top, with unexpectedly short Xe-Ru distance. In the Kr structure the adatom layer locks into threefold sites and the other sites are variable; however, most Kr atoms sit close to on-top, and these possess the shortest Kr-Ru distances. We argue that these site selections and distance variations can be taken as evidence for a chemical contribution in rare gas-metal bonding, in addition to the Van der Waals attraction. Some consequences and difficulties of this concept are discussed.

Original language	English
Pages (from-to)	163-168
Number of pages	6
Journal	Chemical Physics Letters
Volume	270
Issue number	1-2
DOIs	https://doi.org/10.1016/S0009-2614(97)00327-8
State	Published - 16 May 1997

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title = "Structural evidence for chemical contributions in the bonding of the heavy rare gases on a close-packed transition metal surface: Xe and Kr on Ru(001)",

abstract = "We have determined the geometries of two ordered structures of Xe and Kr on Ru(001) by LEED-IV analysis, of the (√3 × √3)R30°-Xe and the close-packed (3 × 3)-Kr structures. The Xe atoms sit on-top, with unexpectedly short Xe-Ru distance. In the Kr structure the adatom layer locks into threefold sites and the other sites are variable; however, most Kr atoms sit close to on-top, and these possess the shortest Kr-Ru distances. We argue that these site selections and distance variations can be taken as evidence for a chemical contribution in rare gas-metal bonding, in addition to the Van der Waals attraction. Some consequences and difficulties of this concept are discussed.",

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T1 - Structural evidence for chemical contributions in the bonding of the heavy rare gases on a close-packed transition metal surface

T2 - Xe and Kr on Ru(001)

AU - Narloch, Björn

AU - Menzel, Dietrich

N1 - Funding Information: This work has been supported financially by the Sonderforschungsbereich 338, TP A2, of the Deutsche Forschungsgemeinschaft.

PY - 1997/5/16

Y1 - 1997/5/16

N2 - We have determined the geometries of two ordered structures of Xe and Kr on Ru(001) by LEED-IV analysis, of the (√3 × √3)R30°-Xe and the close-packed (3 × 3)-Kr structures. The Xe atoms sit on-top, with unexpectedly short Xe-Ru distance. In the Kr structure the adatom layer locks into threefold sites and the other sites are variable; however, most Kr atoms sit close to on-top, and these possess the shortest Kr-Ru distances. We argue that these site selections and distance variations can be taken as evidence for a chemical contribution in rare gas-metal bonding, in addition to the Van der Waals attraction. Some consequences and difficulties of this concept are discussed.

AB - We have determined the geometries of two ordered structures of Xe and Kr on Ru(001) by LEED-IV analysis, of the (√3 × √3)R30°-Xe and the close-packed (3 × 3)-Kr structures. The Xe atoms sit on-top, with unexpectedly short Xe-Ru distance. In the Kr structure the adatom layer locks into threefold sites and the other sites are variable; however, most Kr atoms sit close to on-top, and these possess the shortest Kr-Ru distances. We argue that these site selections and distance variations can be taken as evidence for a chemical contribution in rare gas-metal bonding, in addition to the Van der Waals attraction. Some consequences and difficulties of this concept are discussed.

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Structural evidence for chemical contributions in the bonding of the heavy rare gases on a close-packed transition metal surface: Xe and Kr on Ru(001)

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