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. 2021 May 10;60(24):13372–13379. doi: 10.1002/anie.202101180

Figure 6.

Figure 6

Comparison of the catalytic properties of Zn2Na/Li/K; Zn2Ca/Sr, Zn2La/Y and Zn2. Polymerization Conditions: 0.025 mol % catalyst (1:4000), 20 equiv 1,2‐cyclohexane diol (CHD), 1 bar CO2, CHO neat (9.99 M). Note that specific activity (TOF) is reported, that is, per initiating group, to account for differences in metal oxidation state. Differences in co‐ligand chemistries (iodide vs. benzoate) do not affect activity or selectivity which are determined only during propagation (continual ATR‐IR spectroscopy).