Fig. 4. (A) Conversion-time plot for cROP of 2 with Sc(OTf)3. Polymerization conditions: [2]0 = 2 M, 2 : Sc(OTf)3 = 200 : 1. (B) Conversion-time plot for cROP of 3 with Bi(OTf)3. Polymerization conditions: [3]0 = 7 M, 3 : Bi(OTf)3 = 100 : 1. Monomer conversion determined by 1H NMR spectroscopy. Error bars based on true values. (C) Coordination modes for monomer 3 with LA (Bi(OTf)3) and the corresponding binding free energies (ΔG‡ in kcal mol−1) are provided in the parenthesis.
