高等学校化学学报

• 研究论文 • 上一篇    下一篇

配位不饱和双核钌羰基化合物Ru2(CO)n(n=7,6)的DFT计算研究

罗琼1, 李前树1,2   

  1. 1. 北京理工大学爆炸科学与技术国家重点实验室, 北京 100083; 2. 华南师范大学计算量子化学研究中心, 广州 510631
  • 收稿日期:2008-10-06 修回日期:1900-01-01 出版日期:2008-12-10 发布日期:2008-12-10
  • 通讯作者: 李前树

DFT Studies on Unsaturated Ruthenium Carbonyls-heptacarbonyldiruthenium and Hexacarbonyldiruthenium

LUO Qiong1, LI Qian-Shu1,2*   

  1. 1. State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing 100081, China;2. Center for Computational Quantum Chemistry, South China Normal University, Guangzhou 510631, China
  • Received:2008-10-06 Revised:1900-01-01 Online:2008-12-10 Published:2008-12-10
  • Contact: LI Qian-Shu

摘要: 对配位不饱和双核钌羰基化合物Ru2(CO)n(n=7,6)在BP86/DZP++和MPW1PW91/DZP++ 理论水平下进行了量子化学理论计算研究, 优化得到16个单态和三态异构体, 并讨论其键的性质. 得到的n=7,6基态分别是Cs和C2v构型的单态, 均含有2个配位的桥羰基. 对其离解能的计算表明, 相对于断裂金属钌-钌键而生成2个配位不饱和单核羰基化合物都更容易失去一个羰基.

关键词: 密度泛函理论, MPW1PW91, BP86, Ru2(CO)6, Ru2(CO)7

Abstract: Sixteen structures for Ru2(CO)n(n=7,6) were found by density functional theory(DFT) at the level of BP86/DZP++ and MPW1PW91/DZP++. The bond properties of these structures were discussed. Both the global minimum for Ru2(CO)7 and Ru2(CO)6 are doubly carbonyl bridged singlet structures. The dissociation energies suggest the preference for CO dissociation over rupture of the ruthenium-ruthenium bond in Ru2(CO)7. The potential applications in catalysis of carbonyl reaction are expected for these compounds.

Key words: Density functional theory, MPW1PW91, BP86, Ru2(CO)6, Ru2(CO)7

中图分类号: 

TrendMD: