Sulfonylcalix[4]arene-based Al4 clusters: three aluminum oxo clusters with different coordinated solvents for the CO2 cycloaddition reaction

By using a macrocyclic H 4 BTC4A-SO 2 ligand, we successfully synthesized three Al 4 clusters with different solvents, which exhibit different potentials to expose metal active sites for the catalytic reaction. of cycloaddition of carbon dioxide.