首页> 中文期刊> 《结构化学》 >Benchmark Calculations on the Atomization Enthalpy,Geometry and Vibrational Frequencies of UF6 with Relativistic DFT Methods

Benchmark Calculations on the Atomization Enthalpy,Geometry and Vibrational Frequencies of UF6 with Relativistic DFT Methods

         

摘要

Benchmark calculations on the molar atomization enthalpy, geometry, and vibrational frequencies of uranium hexafluoride (UF6) have been performed by using relativistic density functional theory (DFT) with various levels of relativistic effects, different types of basis sets, and exchange-correlation functionals. Scalar relativistic effects are shown to be critical for the structural properties. The spin-orbit coupling effects are important for the calculated energies, but are much less important for other calculated ground-state properties of closed-shell UF6. We conclude through systematic investigations that ZORA- and RECP-based relativistic DFT methods are both appropriate for incorporating relativistic effects. Comparisons of different types of basis sets (Slater, Gaussian, and plane-wave types) and various levels of theoretical approximation of the exchange-correlation functionals were also made.

著录项

  • 来源
    《结构化学》 |2008年第8期|967-974|共8页
  • 作者

    XIAO Hai; LI Jun;

  • 作者单位

    Institute of Theoretical and Computational Chemistry, Department of Chemistry & Key Laboratory of Organic Optoelectronics and Molecular Engineering of Ministry of Education, Tsinghua University, Beijing 100084, China;

    Institute of Theoretical and Computational Chemistry, Department of Chemistry & Key Laboratory of Organic Optoelectronics and Molecular Engineering of Ministry of Education, Tsinghua University, Beijing 100084, China;

  • 原文格式 PDF
  • 正文语种 chi
  • 中图分类 化学;
  • 关键词

    UF6, atomization enthalpy, relativistic effect, density functional theory;

相似文献

  • 中文文献
  • 外文文献
  • 专利
获取原文

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