物理化学学报 >> 1990, Vol. 6 >> Issue (03): 272-276.doi: 10.3866/PKU.WHXB19900305

研究论文 上一篇    下一篇

过渡金属原子簇离子结合能的光离解测量

郑兰荪; 杨世和   

  1. 厦门大学物理化学博士后流动站;美国Rice大学化学系
  • 收稿日期:1988-07-02 修回日期:1988-12-12 发布日期:1990-06-15
  • 通讯作者: 郑兰荪

Binding Energies of Transition Metal Clusters Measured with Photodissociation

Zheng Lan-Sun; Yang Shi-He   

  1. Postdoctoral Station of Physical Chemistry, Xiamen University; Department of Chemistry, Rice University, U.S.A
  • Received:1988-07-02 Revised:1988-12-12 Published:1990-06-15
  • Contact: Zheng Lan-Sun

摘要: 本实验以激光离解的方式, 较系统地测量了钴、铌及其他一些过渡金属原子簇阳离子的结合能. 实验结果表明: 金属原子簇离子的结合能与其成族原子数关系不大, 而明显地受其组分的影响. 本文还探讨了金属原子簇离子的光离解机理及其几何结构模型。

Abstract: The binding energies of transition metal clusters have been measured as functions of cluster size and composition at first time. The following clusters have been studied. They are cobalt, niobium, iron, nickel, vanadium, tantalum and palladium with cluster size up to 20 atoms. The photodissociation measurement showed that the binding energy is roughly constant with different cluster sizes but differs with different cluster compositions. For almost all clusters measured, the primary one-photon fragmentation pathway is always found to be loss of a single metal from the cluster.