中国物理B ›› 2010, Vol. 19 ›› Issue (11): 113404-113601.doi: 10.1088/1674-1056/19/11/113404

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Accurate ab initio study of low-lying electronic states of phosphorus nitride radical

施德恒1, 王杰敏2, 孙金锋2   

  1. (1)College of Physics & Information Engineering, Henan Normal University, Xinxiang 453007, China; (2)College of Physics & Information Engineering, Henan Normal University, Xinxiang 453007, China; Department of Physics & Electronic Information, Luoyang Normal College, Luoyang 471022, China
  • 收稿日期:2010-04-05 修回日期:2010-05-10 出版日期:2010-11-15 发布日期:2010-11-15
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 10874064 and 60777012), the Program for Science and Technology Innovation Talents in Universities of Henan Province in China (Grant No. 2008HASTIT008) and the Program for Science & Technology of Henan, China (Grant Nos. 092300410189).

Accurate ab initio study of low-lying electronic states of phosphorus nitride radical

Wang Jie-Min(王杰敏)a)b), Sun Jin-Feng(孙金锋) a)b)†, and Shi De-Heng(施德恒)a)   

  1. a College of Physics & Information Engineering, Henan Normal University, Xinxiang 453007, China; b Department of Physics & Electronic Information, Luoyang Normal College, Luoyang 471022, China
  • Received:2010-04-05 Revised:2010-05-10 Online:2010-11-15 Published:2010-11-15
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 10874064 and 60777012), the Program for Science and Technology Innovation Talents in Universities of Henan Province in China (Grant No. 2008HASTIT008) and the Program for Science & Technology of Henan, China (Grant Nos. 092300410189).

摘要: This paper employs the highly accurate valence internally contracted multireference configuration interaction method to investigate the potential energy curves (PECs) for the ground state (X1Σ+) and two low-lying excited states (A1Π and D1Δ of phosphorus nitride (PN) radical with the correlation-consistent basis set, aug-cc-pV6Z, in the valence range. Relativistic effects are considered in these calculations. The spectroscopic constants of the X1Σ+ and A1Π states are calculated based on the PECs, and the results are in good accord with the available experimental data. The first 30 vibrational states for the A1Π state and the first 40 vibrational states for the A1Π state are determined when J=0. For each vibrational state, molecular constants G(υ), B(υ) and D(υ) are also attained.

Abstract: This paper employs the highly accurate valence internally contracted multireference configuration interaction method to investigate the potential energy curves (PECs) for the ground state (X1$\varSigma$+) and two low-lying excited states (A1$\varPi$ and D1$\varDelta$ of phosphorus nitride (PN) radical with the correlation-consistent basis set, aug-cc-pV6Z, in the valence range. Relativistic effects are considered in these calculations. The spectroscopic constants of the X1$\varSigma$+ and A1$\varPi$ states are calculated based on the PECs, and the results are in good accord with the available experimental data. The first 30 vibrational states for the A1$\varPi$ state and the first 40 vibrational states for the A1$\varPi$ state are determined when =0. For each vibrational state, molecular constants $G(v)$, $B(v)$ and $D(v)$ are also attained.

Key words: PN radical, potential energy curves, spectroscopic constant, molecular constants

中图分类号:  (Ab initio calculations)

  • 31.15.A-
31.50.Bc (Potential energy surfaces for ground electronic states) 31.50.Df (Potential energy surfaces for excited electronic states) 33.15.Mt (Rotation, vibration, and vibration-rotation constants) 33.20.Tp (Vibrational analysis)