However, the necessity of dispersion corrections for hydrogen-bonded systems is less clear-cut compared to other weak interaction systems, since the nature of hydrogen bonding is more electrostatic than dispersion. To further support this treatment, we provide the DFT harmonic results and VPT2 results with the D3(0) and D3(BJ) corrections, along with the corresponding DFT and VPT2 values without the corrections, in Table . This analysis shows that essentially the dispersion correction can only change the frequencies by at most ~30 cm -1 , which can be neglected compared to the peak assignment dispute of around 200 cm -1 .