EVIDENCE FOR AN UNUSUAL COORDINATION GEOMETRY FOR ETHYLENE ON CU(110)

被引：48

作者：

JENKS, CJ

BENT, BE

BERNSTEIN, N

ZAERA, F

机构：

[1] COLUMBIA UNIV,DEPT CHEM,NEW YORK,NY 10027

[2] UNIV CALIF RIVERSIDE,DEPT CHEM,RIVERSIDE,CA 92521

来源：

SURFACE SCIENCE | 1992年 / 277卷 / 03期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1016/0039-6028(92)90761-T

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：

Studies of ethylene adsorption on Cu(110) by temperature programmed desorption (TPD) and reflection-absorption infrared spectroscopy (RAIRS) are presented. Ethylene coordinates weakly to Cu(110) and desorbs molecularly intact below 225 K. RAIRS spectra at 100 K show two strong modes: one, the C-C stretching mode, at 1522 cm-1 and the other, the CH 2 scissors mode, at 1261 cm-1. No CH2 wagging mode is observed. These data indicate that the ethylene retains most of its pi character upon adsorption, but unlike on other transition-metal surfaces binds with its molecular plane perpendicular to the surface and its C-C bond tilted away from the surface plane.

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页码：L89 / L94

页数：6

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