English

Tunnelling splitting in the phosphine molecule

Chemical Physics 2016-09-21 v1

Abstract

Splitting due to tunnelling via the potential energy barrier has played a significant role in the study of molecular spectra since the early days of spectroscopy. The observation of the ammonia doublet led to attempts to find a phosphine analogous, but these have so far failed due to its considerably higher barrier. Full dimensional, variational nuclear motion calculations are used to predict splittings as a function of excitation energy. Simulated spectra suggest that such splittings should be observable in the near infrared via overtones of the ν2\nu_2 bending mode starting with 4ν24\nu_2.

Keywords

Cite

@article{arxiv.1609.06053,
  title  = {Tunnelling splitting in the phosphine molecule},
  author = {Clara Sousa-Silva and Jonathan Tennyson and Sergey N. Yurchenko},
  journal= {arXiv preprint arXiv:1609.06053},
  year   = {2016}
}
R2 v1 2026-06-22T15:55:03.995Z