Tricarbonyls of low-coordinated Au(0) atoms in zeolite-supported gold nanoparticles: Evidence from infrared and X-ray absorption spectroscopies

Langmuir : the ACS Journal of Surfaces and Colloids
Bruce G AndersonBruce C Gates

Abstract

Mononuclear gold complexes in zeolite NaY were synthesized from initially physisorbed Au(CH3)2(C5H7O2) and characterized by X-ray absorption and infrared spectra recorded as the samples were exposed to flowing CO. X-ray absorption spectra demonstrate the formation of zero-valent gold nanoparticles during the CO treatment. Three new nu(CO) bands grew in during this treatment, at 2070, 2033, and 2000 cm(-1), characteristic of carbonyls of Au0. Because the relative intensities of these bands decreased monotonically when the flow of CO was replaced by flowing He, it is inferred that they correspond to a single Au0(CO)3 species, on low-coordinated Au atoms. This is the first example of an Au0(CO)3 species.

References

Sep 19, 2002·Journal of the American Chemical Society·Nuria Lopez, Jens K Nørskov
Mar 5, 2003·Chemical Communications : Chem Comm·Serena Biella, Michele Rossi
Mar 5, 2004·Journal of the American Chemical Society·Javier Guzman, Bruce C Gates
Feb 16, 2005·Angewandte Chemie·Ioannis N RemediakisJens K Nørskov
May 26, 2005·Angewandte Chemie·Alberto AbadHermenegildo García

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Citations

Jun 11, 2010·The Journal of Physical Chemistry. a·Anibal SierraaltaRoberto Gomperts

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