When the reporter induces the effect:: Unusual IR spectra of CO on Au1/MgO(001)/Mo(001)

被引：90

作者：

Sterrer, M

Yulikov, M

Risse, T

Freund, HJ

Carrasco, J

Illas, F

Di Valentin, C

Giordano, L

Pacchioni, G

机构：

[1] Max Planck Soc, Fritz Haber Inst, Dept Phys Chem, D-14195 Berlin, Germany

[2] Univ Barcelona, Dept Quim Fis, E-08028 Barcelona, Spain

[3] Univ Milan, Dipartimento Sci Mat, I-20125 Milan, Italy

来源：

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION | 2006年 / 45卷 / 16期

关键词：

ab initio calculations; color centers; gold; IR spectroscopy; magnesium oxide;

D O I：

10.1002/anie.200504473

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Innocence lost: The IR spectra of Au/CO complexes adsorbed on of a MgO(001) film differ from the corresponding neutral Au clusters. Calculations indicate this shift of 200-250 cm-1 can be associated with a negative charge on the Au/CO complex. For Au/CO complexes on so-called color centers a charge transfer is expected, however Au atoms on terrace sites are neutral. Thus, CO in fact induces the charge transfer instead of reporting the charge state of the adsorbed Au atoms. (Chemical Equation Presented) © 2006 Wiley-VCH Verlag GmbH & Co. KGaA.

引用

页码：2633 / 2635

页数：3

共 38 条

[1] Identification of defect sites on MgO(100) thin films by decoration with Pd atoms and studying CO adsorption properties [J].