| Reference Label | Details |
|---|---|
| Huber 1979 | K. P. Huber and G. Herzberg, "Molecular Spectra and Molecular Structure. IV. Constants of Diatomic Molecules", Van Nostrand Reinhold: New York 1979 |
| Ruscic anh | B3LYP/6-311++G(3df,3pd) Opt(Z-matrix,VeryTight) Int(UltraFine) Freq(VibRot,Anharmonic,ReadISO) Symm(Loose), or some other DFT |
| est unc | estimated uncertainty |
| Hernandez-Lamoneda 2004 | R. Hernández-Lamoneda and A. Ramírez-Solís, J. Chem. Phys. 120, 10084-10088 (2004) Systematic ab initio Calculations on the Energetics and Stability of Covalent O4 |