Orientation effects in physisorbed multilayers on Cu(100)

被引：7

作者：

Cook, JC ^{[1
]}

McCash, EM ^{[1
]}

机构：

[1] UNIV YORK,DEPT CHEM,YORK YO1 5DD,N YORKSHIRE,ENGLAND

来源：

SURFACE SCIENCE | 1996年 / 365卷 / 03期

基金：

英国工程与自然科学研究理事会;

关键词：

copper; ethers; infrared absorption spectroscopy; low index single crystal surfaces; physical adsorption; reflection spectroscopy; solid-gas interfaces; vibrations of adsorbed molecules;

D O I：

10.1016/0039-6028(96)00777-7

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：

We illustrate the use of Reflection-Absorption Infrared Spectroscopy (RAIRS) to determine the molecular orientation of physisorbed multilayered species. We conclude that trichloromethane orients with the C-3 axis perpendicular to the surface and dichloromethane orients with the C-2 axis parallel to the surface. However, the orientation of physisorbed carbon tetrachloride could not be determined from the RAIR spectra. Physisorbed diethyl ether was found to be predominantly in the form of the trans-trans conformer with the C-2 axis tilted slightly away from the surface. Annealing the physisorbed films to 120 K results in changes in the RAIR spectrum which are attributed to ordering. No decomposition of the molecules was observed on Cu(100).

引用

页码：573 / 580

页数：8

共 11 条

[1] BONDING AND REACTIVITY OF CYCLOPENTENE ON PT(111) [J].