STRUCTURAL AND ELECTRONIC-PROPERTIES OF MOLECULARLY ADSORBED CS2 ON CU(111) STUDIED BY X-RAY-ABSORPTION AND PHOTOELECTRON SPECTROSCOPIES

被引：21

作者：

YAGI, S

YOKOYAMA, T

KITAJIMA, Y

TAKATA, Y

KANAZAWA, T

IMANISHI, A

OHTA, T

机构：

[1] UNIV TOKYO,SCH SCI,DEPT CHEM,BUNKYO KU,TOKYO 113,JAPAN

[2] HIROSHIMA UNIV,FAC SCI,DEPT MAT SCI,HIGASHIHIROSHIMA,HIROSHIMA 724,JAPAN

[3] NATL LAB HIGH ENERGY PHYS,PHOTON FACTORY,TSUKUBA,IBARAKI 305,JAPAN

来源：

SURFACE SCIENCE | 1994年 / 311卷 / 1-2期

关键词：

D O I：

10.1016/0039-6028(94)90488-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 surface structure and the electronic properties of submonolayer carbon disulphide CS2 molecularly adsorbed on Cu(111) at 92 K were investigated by means of S K-edge surface extended X-ray absorption fine structure (SEXAFS), near-edge X-ray absorption fine structure (NEXAFS) and X-ray photoelectron spectroscopy (XPS) measurements. The CS2 Molecule is found by NEXAFS to lie nearly flat and linearly on the surface with a tilt angle of the molecular axis of 8 +/- 5-degree. NEXAFS and XPS suggest that the adsorbed species is in a state close to CS22-. SEXAFS has clarified the adsorption geometry of the CS2 molecule, where one S atom locates at the three-fold hollow site and the other S is at the bridge site with a slightly longer S-Cu distance. The determined surface structure is discussed comparing to other molecular adsorbate systems.

引用

页码：172 / 180

页数：9

共 22 条

[1]

[Anonymous], 1992, NEXAFS SPECTROSCOPY, DOI DOI 10.1007/978-3-662-02853-7

[2]

ARVANITIS D, 1993, JPN J APPL PHYS S, P371

[3] ORIENTATIONAL PHASE-TRANSITION IN THE SYSTEM PYRIDINE AG(111) - A NEAR-EDGE X-RAY-ABSORPTION FINE-STRUCTURE STUDY [J].