中国物理B ›› 2019, Vol. 28 ›› Issue (1): 13203-013203.doi: 10.1088/1674-1056/28/1/013203

• SPECIAL TOPIC—Recent advances in thermoelectric materials and devices • 上一篇    下一篇

Accurate calculation of electron affinity for S3

Xue Yang(杨雪), Haifeng Xu(徐海峰), Bing Yan(闫冰)   

  1. 1 College of Science, Jilin Institute of Chemical Technology, Jilin 132022, China;
    2 Jilin Provincial Key Laboratory of Applied Atomic and Molecular Spectroscopy, Institute of Atomic and Molecular Physics, Jilin University, Changchun 130012, China
  • 收稿日期:2018-10-15 修回日期:2018-11-06 出版日期:2019-01-05 发布日期:2019-01-05
  • 通讯作者: Bing Yan E-mail:yanbing@jlu.edu.cn
  • 基金资助:

    Project supported by the National Natural Science Foundation of China (Grant Nos. 11874179, 11447194,11574114, and 11874177) and the Natural Science Foundation of Jilin Province, China (Grant No. 20180101289JC).

Accurate calculation of electron affinity for S3

Xue Yang(杨雪)1,2, Haifeng Xu(徐海峰)2, Bing Yan(闫冰)2   

  1. 1 College of Science, Jilin Institute of Chemical Technology, Jilin 132022, China;
    2 Jilin Provincial Key Laboratory of Applied Atomic and Molecular Spectroscopy, Institute of Atomic and Molecular Physics, Jilin University, Changchun 130012, China
  • Received:2018-10-15 Revised:2018-11-06 Online:2019-01-05 Published:2019-01-05
  • Contact: Bing Yan E-mail:yanbing@jlu.edu.cn
  • Supported by:

    Project supported by the National Natural Science Foundation of China (Grant Nos. 11874179, 11447194,11574114, and 11874177) and the Natural Science Foundation of Jilin Province, China (Grant No. 20180101289JC).

摘要:

The accurate equilibrium structures of S3 and S3- are determined by the coupled-cluster method with single, double excitation and perturbative triple excitation (CCSD(T)) with basis sets of aug-cc-pV(n+d)Z (n=T, Q, 5, or 6), complete basis set extrapolation functions with two-parameters and three-parameters, together with considering the contributions due to the core-valence electron correlation, scalar relativistic effects, spin-orbit coupling, and zero-point vibrational corrections. Our calculations show that both the neutral S3 and anion S3- have open forms with C2v symmetry. On the basis of the stable geometries, the adiabatic electron affinity of S3 is determined to be 19041(11) cm-1, which is in excellent agreement with the experimental data (19059(7) cm-1). The dependence of geometries and electron affinity on the computation level and physical corrections is discussed. The present computational results are helpful to the experimental molecular spectroscopy and bonding of S3.

关键词: S3, molecular geometry, adiabatic electron affinity, coupled-cluster method with single, double excitation and perturbative triple excitation (CCSD(T))

Abstract:

The accurate equilibrium structures of S3 and S3- are determined by the coupled-cluster method with single, double excitation and perturbative triple excitation (CCSD(T)) with basis sets of aug-cc-pV(n+d)Z (n=T, Q, 5, or 6), complete basis set extrapolation functions with two-parameters and three-parameters, together with considering the contributions due to the core-valence electron correlation, scalar relativistic effects, spin-orbit coupling, and zero-point vibrational corrections. Our calculations show that both the neutral S3 and anion S3- have open forms with C2v symmetry. On the basis of the stable geometries, the adiabatic electron affinity of S3 is determined to be 19041(11) cm-1, which is in excellent agreement with the experimental data (19059(7) cm-1). The dependence of geometries and electron affinity on the computation level and physical corrections is discussed. The present computational results are helpful to the experimental molecular spectroscopy and bonding of S3.

Key words: S3, molecular geometry, adiabatic electron affinity, coupled-cluster method with single, double excitation and perturbative triple excitation (CCSD(T))

中图分类号:  (Ionization potentials, electron affinities)

  • 32.10.Hq
33.15.-e (Properties of molecules) 31.15.A- (Ab initio calculations) 31.15.vq (Electron correlation calculations for polyatomic molecules)