MFU-4l comprising ZneCl units shows only physisorption of both gases
Introduction of Li into the parent MFU-4l framework leads to a remarkable increase of binding strength of both N2O and
CO2 showing considerable Lewis acidity of LiI centers.
CuI-MFU-4l shows even stronger binding of N2O, as compared to Li-MFU-4l, whereas CO2 doesn't bind to CuI centers.
Preferential binding of N2O to CuI centers was also confirmed by in situ synchrotron X-ray powder diffraction measurements.