

act = actual temperature +/- ~15 C (estimated as described in J.Chem. Phys. 158, 114201 (2023))

Samples prepared and 2D-IR data acquired as described in "Distinctive signatures and ultrafast dynamics of Bronsted sites, silanol nests and adsorbed water in zeolites revealed by 2D-IR spectroscopy", 
Donaldson et al, Chemical Science 2025

2D-IR spectra are tab separated

The pump axis is row 1
The probe axis of parallel and perpendicular detectors respectively are column 1

The 2D-IR plots of "D-ZSM-5 thin powder sandwich" have an unfortunate calibration uncertainty in probe and pump of ~20 cm-1. 
This can be seen by the fact that the diagonal scatter band does not lie exactly on-diagonal. With no sharp bands in the spectrum, and potential
pump bandwidth and non-condon effects making an IR / 2D-IR comparison misleading, the data is left as-is.  

The ZSM-5 plot in Figure 6 comes from the 0.4 ps perpendicular 2DIR spectrum in the Figure 4 'D-ZSM-5 120C act 1000s av_waiting times_19-05-2021_2DIR' folder  

The FTIR plot of D-ZSM-5 thin powder sandwich @40C shows some unexchanged protons. This is not thought to affect any conclusions in Donaldson et al, Chemical Science 2025

The FTIR plot of 'FTIR D2O in D-ZSM-5 120C' shows some hydrocarbon CH-stretch. This was on the windows of the Linkam cell and does not affect any conclusions in in Donaldson et al, Chemical Science 2025 