The CO2 molecule is never linear

@article{Jensen2020TheCM,
  title={The CO2 molecule is never linear},
  author={Per Jensen and Michael A. Spanner and Philip R. Bunker},
  journal={Journal of Molecular Structure},
  year={2020},
  volume={1212},
  pages={128087}
}
Abstract We make an ab initio calculation of the bending distribution functions for low lying vibrational states of the CO2 molecule in its ground electronic state. These functions have their maximum values at a non-linear geometry, and the value zero at linearity, despite the fact that the potential surface has its minimum value at linearity. These functions are in accord with experimental distribution functions inferred by analysis of Coulomb Explosion Imaging experiments. Thus in a femto… Expand
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4 Citations

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The well-established relation r0 > re holds always?
Abstract The relation r 0 > r e is a well established wisdom in molecular spectroscopy. However, when we compare r e with the r 0 , eff , derived from the experimentally determined rotational… Expand
Comment on “Linear and bent triatomic molecules are not qualitatively different!”
  • T. Amano
  • Canadian Journal of Physics
  • 2021
Jensen (Can. J. Phys. 98, 506 (2020). doi: 10.1139/cjp-2019-0395 ) presents theoretical justification for the claim that linear triatomic molecules are necessarily observed to be bent. The basis of… Expand
Reply to the comment by Amano on “Linear and bent triatomic molecules are not qualitatively different!”
  • Per Jensen
  • Canadian Journal of Physics
  • 2021
In Amano’s comment on Jensen’s paper, we notice two important misconceptions: (i) Amano overlooks the fact that all features special for a linear molecule originate in the double degeneracy in the… Expand
Excited state quantum phase transitions in the bending spectra of molecules
We present an extension of the Hamiltonian of the two dimensional limit of the vibron model encompassing all possible interactions up to four-body operators. We apply this Hamiltonian to the modeling… Expand

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Linear and bent triatomic molecules are not qualitatively different!
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