NEXAFS STUDIES OF HALOBENZENES AND PHENYL GROUPS ON CU(111)

被引：80
作者：
YANG, MX
XI, M
YUAN, HJ
BENT, BE
STEVENS, P
WHITE, JM
机构：
[1] COLUMBIA UNIV,DEPT CHEM,NEW YORK,NY 10027
[2] EXXON RES & ENGN CO,ANNANDALE,NJ 08801
[3] UNIV TEXAS,DEPT CHEM & BIOCHEM,AUSTIN,TX 78712
来源：
SURFACE SCIENCE | 1995年 / 341卷 / 1-2期
基金：
美国国家科学基金会;
关键词：
ARYLHALIDES; BROMINE; CHEMISORPTION; CHLORINE; COPPER; IODINE; LOW INDEX SINGLE CRYSTAL SURFACES; MOLECULE SOLID REACTIONS; NEAR EDGE EXTENDED X-RAY ABSORPTION FINE STRUCTURE (NEXAFS); PHYSICAL ADSORPTION; SOLID-GAS INTERFACES; SURFACE CHEMICAL REACTION;
D O I：
10.1016/0039-6028(95)00737-7
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：
The orientations of halobenzenes (C6H5Cl and C6H5I) and phenyl (C6H5) groups adsorbed on a Cu(111) surface have been studied by the near edge X-ray absorption fine structure (NEXAFS) method. For near-monolayer coverages, both chlorobenzene (C6H5Cl) and iodobenzene (C6H5I) bond with the plane of their aromatic pi-rings tilted away from the surface plane by 45 +/- 5 degrees. Phenyl groups, generated by thermal dissociation of iodobenzene on the surface at T> 180 K, bond with their pi-rings tilted away from the surface plane by an average angle of 43 +/- 5 degrees at near-saturation coverages. This geometry is analogous to the eta(1) structure found for pyridine adsorption on metal surfaces.
引用
收藏
页码：9 / 18
页数：10
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