University Chemistry ›› 2025, Vol. 40 ›› Issue (3): 415-424.doi: 10.12461/PKU.DXHX202408063

• Self Studies • Previous Articles    

Proof and Interpretation of Severe Spectroscopic Selection Rules

Wenliang Wang1,2, Weina Wang2, Lixia Feng3, Nan Wei1, Sufan Wang1, Tian Sheng1, Tao Zhou1   

  1. 1 School of Chemistry and Materials Science, Anhui Normal University, Wuhu 241000, Anhui Province, China;
    2 School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an 710119, China;
    3 College of Chemistry and Materials, Taiyuan Normal University, Jinzhong 030619, Shanxi Province, China
  • Received:2024-08-12 Accepted:2024-10-10 Published:2025-03-19
  • Contact: Wenliang Wang E-mail:wlwang@snnu.edu.cn

Abstract: This study clarifies several ambiguities regarding the selection rules of atomic spectra found in structural chemistry textbooks, based on the fundamental formula of dipole matrix elements. It discusses the specific expressions for the spectroscopy of diatomic molecular rotation and vibration, as well as the infrared and Raman spectra of polyatomic molecules, ultraviolet-visible electronic spectroscopy, and circular dichroism spectroscopy. Relevant equivalence criteria are also provided. Additionally, the meanings and rationality of various spectroscopic selection rules are elucidated.

Key words: Electric dipole, Polarized dipole, Atomic spectroscopy, Molecular spectroscopy, Spectroscopic selection rules