A TENSOR LEED ANALYSIS OF THE RH(110)-P2MG(2X1)-2CO STRUCTURE

被引：19

作者：

BATTEAS, JD

BARBIERI, A

STARKEY, EK

VANHOVE, MA

SOMORJAI, GA

机构：

[1] LAWRENCE BERKELEY LAB,CTR ADV MAT,DIV MAT SCI,BERKELEY,CA 94720

[2] UNIV CALIF BERKELEY,DEPT CHEM,BERKELEY,CA 94720

来源：

SURFACE SCIENCE | 1994年 / 313卷 / 03期

关键词：

D O I：

10.1016/0039-6028(94)90054-X

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：

The structural geometries of both the clean and CO covered Rh(110) surfaces have been determined by a LEED intensity analysis. The clean surface exhibits a top layer contraction of 0.09 +/- 0.02 angstrom and a second layer expansion of 0.03 +/- 0.03 angstrom relative to the bulk interlayer spacing. Upon the adsorption of 1 ML of CO the molecules are arranged in a zig-zag fashion along the [110BAR] direction to produce the observed glide plane symmetry in the LEED pattern. The clean surface relaxations are removed and each CO bonds near a short bridge site with the CO molecular axis oriented approximately 24-degrees from the surface normal. This bonding geometry results in a Rh-C bond length of 1.97 +/- 0.09 angstrom and a C-O bond length of 1.13 +/- 0.09 angstrom.

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页码：341 / 348

页数：8

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