English
 
User Manual Privacy Policy Disclaimer Contact us
  Advanced SearchBrowse

Item

ITEM ACTIONSEXPORT

Released

Journal Article

Gold Cluster Carbonyls: Saturated Adsorption of CO on Gold Cluster Cations, Vibrational Spectroscopy, and Implications for Their Structures

MPS-Authors
/persons/resource/persons21506

Fielicke,  André
Molecular Physics, Fritz Haber Institute, Max Planck Society;

/persons/resource/persons21614

Helden,  Gert von
Molecular Physics, Fritz Haber Institute, Max Planck Society;

/persons/resource/persons21859

Meijer,  Gerard
Molecular Physics, Fritz Haber Institute, Max Planck Society;

Locator
There are no locators available
Fulltext (public)
There are no public fulltexts available
Supplementary Material (public)
There is no public supplementary material available
Citation

Fielicke, A., Helden, G. v., Meijer, G., Pedersen, D. B.., Simard, B., & Rayner, D. M. (2005). Gold Cluster Carbonyls: Saturated Adsorption of CO on Gold Cluster Cations, Vibrational Spectroscopy, and Implications for Their Structures. Journal of the American Chemical Society, 127(23), 8416-8423. doi:10.1021/ja0509230.


Cite as: http://hdl.handle.net/11858/00-001M-0000-0011-09FD-3
Abstract
We report on the interaction of carbon monoxide with cationic gold clusters in the gas phase. Successive adsorption of CO molecules on the Aun+ clusters proceeds until a cluster size specific saturation coverage is reached. Structural information for the bare gold clusters is obtained by comparing the saturation stoichiometry with the number of available equivalent sites presented by candidate structures of Aun+. Our findings are in agreement with the planar structures of the Aun+ cluster cations with n≤7 that are suggested by ion mobility experiments [Gilb, S.; Weis, P.; Furche, F.; Ahlrichs, R.; Kappes, M. M. J. Chem. Phys. 2001, 116, 4094]. By inference we also establish the structure of the saturated Aun(COm+ complexes. In certain cases we find evidence suggesting that successive adsorption of CO can distort the metal cluster framework. In addition, the vibrational spectra of the Aun(COm+ complexes in both the CO stretching region and in the region of the Au-C stretch and the Au-C-O bend are measured using infrared photodepletion spectroscopy. The spectra further aid in the structure determination of Aun+, provide information on the structure of the Aun+-CO complexes, and can be compared with spectra of CO adsorbates on deposited clusters or surfaces.