✦ LIBER ✦

On the electron affinity of Au3

✍ Scribed by Charles W. Bauschlicher Jr.

Publisher: Elsevier Science
Year: 1989
Tongue: English
Weight: 369 KB
Volume: 156
Category: Article
ISSN: 0009-2614
DOI: 10.1016/0009-2614(89)87088-5

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✦ Synopsis

The EA of Au3 is estimated to be 3.93 eV. The calculations also show that the feature in the photodetachment spectrum at about 2 eV electron binding energy is due to a two-photon process involving fragmentation of Auc to Au and Au; and subsequent photodetachment of Au:. Au3 is found to have a *B, ground state that is only slightly distorted from an equilateral triangle.

1 L Introduction

Recently Ervin and Lineberger [ 1 ] measured the electron affinity (EA) of small Au clusters using photodetachment spectroscopy. The EA of Au was determined to be 2.309 + 0.005 eV. The spectrum for Au, was of sufficient resolution that a Franck-Condon analysis could be performed and the change in bond length and vibrational frequency between the neutral and negative ion could be determined. Thus they were able to determine an accurate value for the EA of Au2, 1.939f0.010

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