Fielicke André, von Helden Gert, Meijer Gerard, Simard Benoit, Rayner David M
Fritz-Haber-Institut der Max-Planck-Gesellschaft, Faradayweg 4-6, D-14195 Berlin, Germany.
J Phys Chem B. 2005 Dec 22;109(50):23935-40. doi: 10.1021/jp055856a.
We report the vibrational spectra of the carbonyl complexes of anionic gold clusters in the range of the CO stretching frequency as measured in the gas phase using IR multiple photon dissociation spectroscopy. The investigated complexes contain between 3 and 14 Au atoms and up to 7 CO ligands. Special attention is given to the complexes that exhibit saturation CO coverage as well as to the monocarbonyl species. In conjunction with data from the corresponding cationic complexes we quantify how the CO stretching frequency varies with the charge state of the gold cluster. Our results provide a size- and charge-dependent basis to interpret values of the CO stretching frequency measured for CO on deposited gold clusters in terms of the charge states of the clusters.
我们报告了使用红外多光子解离光谱法在气相中测量的阴离子金簇羰基配合物在CO伸缩频率范围内的振动光谱。所研究的配合物含有3至14个金原子以及多达7个CO配体。特别关注了表现出CO覆盖饱和的配合物以及单羰基物种。结合相应阳离子配合物的数据，我们量化了CO伸缩频率如何随金簇的电荷状态变化。我们的结果提供了一个尺寸和电荷依赖性的基础，以便根据簇的电荷状态来解释在沉积的金簇上测量的CO伸缩频率值。
