UNUSUAL ADSORPTION STATE OF CO ON CS-COVERED RU(001)

被引:12
作者
KONDOH, H [1 ]
NOZOYE, H [1 ]
机构
[1] NATL INST MAT & CHEM RES,TSUKUBA,IBARAKI 305,JAPAN
关键词
D O I
10.1021/j100053a005
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
Adsorption of CO on Cs-precovered Ru(001) with one-monolayer coverage (theta(Cs) = 0.33) has been investigated by use of electron energy loss spectroscopy (EELS), temperature-programmed desorption (TPD), and low-energy electron diffraction (LEED). The C-O stretching mode of the adsorbed CO does not appear in the specular mode of EELS but clearly appears in the off-specular mode at an unusually low frequency of 1245 cm(-1). This unusual adsorption state has been interpreted in terms of an inclined or a side-on adsorption geometry of CO and formation of a double-layer structure (Cs/Cs + CO/Ru(001)) where the CO dipole is screened by the second-layer Cs.
引用
收藏
页码:390 / 392
页数:3
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