Photodissociation Structural Dynamics of TrirutheniumDodecacarbonyl Investigated by X-ray Transient Absorption Spectroscopy
详细信息 查看全文
- 作者：Michael R. Harpham ; Andrew ; B. Stickrath ; Xiaoyi ; Zhang ; Jier Huang ; Michael W. Mara ; Lin X. Chen ; Di-Jia Liu
- 刊名：Journal of Physical Chemistry A
- 出版年：2013
- 出版时间：October 3, 2013
- 年：2013
- 卷：117
- 期：39
- 页码：9807-9813
- 全文大小：393K
- 年卷期：v.117,no.39(October 3, 2013)
- ISSN：1520-5215
文摘
The molecular and electronic structures of the transient intermediates generated from the photolysis of trirutheniumdodecacarbonyl, Rub>3 b>(CO)b>12 b>, by ultrafast UV (351 nm) laser excitation were investigated using X-ray transient absorption (XTA) spectroscopy. The electronic configuration change and nuclear rearrangement after the dissociation of carbonyls were observed at ruthenium K-edge X-ray absorption near edge structure and X-ray absorption fine structure spectra. Analysis of XTA data, acquired after 100, 200, and 400 ps and 300 ns time delay following the photoexcitation, identified the presence of three intermediate species with Rub>3 b>(CO)b>10 b> being the most dominating one. The results set an example of applying XTA in capturing both transient electronic and nuclear configurations in metal clusters simulating catalysts in chemical reactions.