A new
material, MOF-type [Ir]@NU-1000, was accessed from the incorporation
of the iridium organometallic fragment [Ir{κ3(P,Si,Si)PhP(o-C6H4CH2Si
i
Pr2)2}] into NU-1000. The new
material incorporates less than 1 wt % of Ir(III) (molar ratio Ir
to NU-1000, 1:11), but the heat of adsorption for SO2 is
significantly enhanced with respect to that of NU-1000. Being a highly
promising adsorbent for SO2 capture, [Ir]@NU-1000 combines
exceptional SO2 uptake at room temperature and outstanding
cyclability. Additionally, it is stable and can be regenerated after
SO2 desorption at low temperature.