CO2 in deuterated toluene NMR tube contg. complex and solvent evacuated at -196°C, excess of CO2 condensed, sealed (vac.), allowed to warm to room temp.; not isolated, detected by NMR;

CO2 in deuterated toluene NMR tube contg. complex and solvent evacuated at -196°C, excess of CO2 condensed, sealed (vac.), allowed to warm to room temp.; not isolated, detected by NMR;