Synthesis and structure of bismuth compounds bearing a sulfur-bridged bis(phenolato) ligand and their catalytic application to the solvent-free synthesis of propylene carbonate from CO2 and propylene oxide

Two bismuth compounds bearing a sulfur-bridged bis(phenolato) ligand were synthesized and found to show high catalytic activity and selectivity for solvent-free synthesis of propylene carbonate from CO(2) and propylene oxide in the presence of iodide salts as co-catalysts at room temperature under 1 atm CO(2).