用高分辨率红外光谱探测金属团簇 - 吸附物体系的结构。

Probing the structure of metal cluster-adsorbate systems with high-resolution infrared spectroscopy.

作者信息

Nauta K, Moore D T, Stiles P L, Miller R E

机构信息

Department of Chemistry, University of North Carolina, Chapel Hill, NC 27599, USA.

出版信息

Science. 2001 Apr 20;292(5516):481-4. doi: 10.1126/science.1058896.

DOI:10.1126/science.1058896

PMID:11313489

Abstract

High-resolution infrared laser spectroscopy was used to obtain rotationally resolved infrared spectra of adsorbate-metal complexes. The method involves forming the bare metal clusters in helium nanodroplets and then adding a molecular adsorbate (HCN) and recording the infrared spectrum associated with the C-H stretching vibration. Rotationally resolved spectra were obtained for HCN-Mg(n) (n = 1 to 4). The results suggest a qualitative change in the adsorbate-metal cluster bonding with cluster size.

摘要

高分辨率红外激光光谱法被用于获取吸附物-金属配合物的转动分辨红外光谱。该方法包括在氦纳米液滴中形成裸金属簇，然后添加分子吸附物（HCN）并记录与C-H伸缩振动相关的红外光谱。获得了HCN-Mg(n)（n = 1至4）的转动分辨光谱。结果表明吸附物-金属簇键合随簇尺寸发生了定性变化。