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MALDI–TOF spectrum of poly(hexene carbonate) prepared using catalyst 2. The peak at 565 Daltons corresponds to four ring-opened cyclohexene oxide units, three CO2 units, 2 hydrogens (to cap the two terminal oxygens) and a sodium ion. The other peaks are then separated by 142 Daltons corresponding to an additional ring-opened cyclohexene oxide and carbon dioxide.
