首页> 外文OA文献 >Gold cluster carbonyls: saturated adsorption of CO on gold cluster cations, vibrational spectroscopy, and implications for their structures
【2h】

Gold cluster carbonyls: saturated adsorption of CO on gold cluster cations, vibrational spectroscopy, and implications for their structures

机译:金簇羰基:CO在金簇阳离子上的饱和吸附,振动光谱及其结构暗示

代理获取
本网站仅为用户提供外文OA文献查询和代理获取服务,本网站没有原文。下单后我们将采用程序或人工为您竭诚获取高质量的原文,但由于OA文献来源多样且变更频繁,仍可能出现获取不到、文献不完整或与标题不符等情况,如果获取不到我们将提供退款服务。请知悉。

摘要

We report on the interaction of carbon monoxide with cationic gold clusters in the gas phase. Successive adsorption of CO molecules on the Aun+ clusters proceeds until a cluster size specific saturation coverage is reached. Structural information for the bare gold clusters is obtained by comparing the saturation stoichiometry with the number of available equivalent sites presented by candidate structures of Aun+. Our findings are in agreement with the planar structures of the Aun+ cluster cations with n 7 that are suggested by ion mobility experiments [Gilb, S.; Weis, P.; Furche, F.; Ahlrichs, R.; Kappes, M. M. J. Chem. Phys. 2001, 116, 4094]. By inference we also establish the structure of the saturated Aun(CO)m+ complexes. In certain cases we find evidence suggesting that successive adsorption of CO can distort the metal cluster framework. In addition, the vibrational spectra of the Aun(CO)m+ complexes in both the CO stretching region and in the region of the Au-C stretch and the Au-C-O bend are measured using infrared photodepletion spectroscopy. The spectra further aid in the structure determination of Aun+, provide information on the structure of the Aun+-CO complexes, and can be compared with spectra of CO adsorbates on deposited clusters or surfaces.
机译:我们报告一氧化碳与气相中的阳离子金簇的相互作用。继续将CO分子连续吸附在Aun +团簇上,直到达到团簇大小特定的饱和覆盖率为止。通过将饱和化学计量与Aun +候选结构表示的可用等效位点数量进行比较,可获得裸金簇的结构信息。我们的发现与离子迁移实验[Gilb,S .; 1984]建议的具有n 7的Aun +簇阳离子的平面结构一致。 Weis,P .; F. R.Ahlrichs; Kappes,M.M.J.Chem。物理2001,116,4094]。通过推断,我们还建立了饱和Aun(CO)m +配合物的结构。在某些情况下,我们发现证据表明连续吸收CO会使金属簇构架变形。另外,使用红外光损耗光谱法测量在CO拉伸区域以及Au-C拉伸和Au-C-O弯曲区域中的Aun(CO)m +络合物的振动光谱。光谱进一步帮助确定Aun +的结构,提供有关Aun + -CO配合物结构的信息,并且可以与沉积簇或表面上的CO吸附物的光谱进行比较。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
代理获取

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号