MOLECULAR-ORBITAL SHIFTS OF PI-BONDED ETHYLENE ADSORBED ON PT(111) IN THE PRESENCE OF POTASSIUM ATOMS

被引：12

作者：

CASSUTO, A

MANE, M

KRONNEBERG, V

JUPILLE, J

机构：

[1] Laboratoire Maurice Letort, 54600 Villers les Nancy, Rue de Vandoeuvre

来源：

SURFACE SCIENCE | 1991年 / 251卷

关键词：

D O I：

10.1016/0039-6028(91)91164-S

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

On increasing K coverages, the valence levels of pi-bonded ethylene formed on K precovered Pt(111) surfaces are seen to shift continuously towards higher binding energies up to theta-K = 0.14 and to level off beyond that coverage. This behaviour is explained using simple electrostatic considerations. At low coverage, the compression of the molecules is suggested to move the pi-bonded molecules towards the K atoms (i.e. towards higher local electrostatic potential). Above theta-K = 0.14, the predominant effect comes from the influence of several K adatoms.

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页码：1133 / 1137

页数：5

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