CO adsorption on neutral iridium clusters |
| |
Authors: | C Kerpal D J Harding G Meijer A Fielicke |
| |
Institution: | (1) Department of Chemical Engineering, University of Wisconsin, Madison, WI 53706, USA |
| |
Abstract: | The adsorption of carbon monoxide on neutral iridium clusters in the size range of
n = 3 to 21 atoms is investigated with infrared multiple photon
dissociation spectroscopy. For each cluster size only a single ν(CO) band
is present with frequencies in the range between 1962 cm-1
(n = 8) and 1985 cm-1 (n = 18) which can be
attributed to an atop binding geometry. This behaviour is compared to the CO binding
geometries on clusters of other group 9 and 10 transition metals as well as to that on
extended surfaces. The preference of Ir for atop binding is rationalised by relativistic
effects on the electronic structure of the later 5d metals. |
| |
Keywords: | |
本文献已被 SpringerLink 等数据库收录! |