Summary of cROP of 2 and 3 under various polymerization conditions.
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| No. | Monomer | Cat. | Solvent CH2C12 : MeCN | [M]0 (mol L−1) | [M] : [cat] | Conva (%) | DPb | M w b (g mol−1) | Đ b |
| 1 | 2 | Sc(OTf)3 | 100 : 0 | 1 | 50 : 1 | 74 | 16 | 11 030 | 1.6 |
| 2 | 2 | Bi(OTf)3 | 100 : 0 | 1 | 50 : 1 | 84 | 8 | 4400 | 1.3 |
| 3 | 2 | Sc(OTf)3 | 100 : 0 | 2 | 100 : 1 | 82 | 17 | 12 200 | 1.6 |
| 4 | 2 | Sc(OTf)3 | 100 : 0 | 2 | 200 : 1 | 71 | 27 | 16 500 | 1.4 |
| 5 | 2 | Sc(OTf)3 | 99 : 1 | 2 | 100 : 1 | 57 | 31 | 18 600 | 1.4 |
| 6 | 2 | Sc(OTf)3 | 99 : 1 | 2 | 200 : 1 | 34 | 22 | 13 400 | 1.4 |
| 7 | 3 | Bi(OTf)3 | 100 : 0 | 1 | 20 : 1 | 86 | 13 | 6100 | 1.7 |
| 8 | 3 | Sc(OTf)3 | 100 : 0 | 1 | 20 : 1 | 77 | 12 | 7900 | 2.3 |
| 9 | 3 | Bi(OTf)3 | 100 : 0 | Bulk | 100 : 1 | 75 | 24 | 10 500 | 1.5 |
| 10 | 3 | Bi(OTf)3 | 100 : 0 | Bulk | 200 : 1 | 71 | 21 | 9500 | 1.7 |
| 11 | 3 | Bi(OTf)3 | 99 : 1 | 2 | 100 : 1 | 68 | 16 | 6600 | 1.5 |
| 12 | 3 | Bi(OTf)3 | 99 : 1 | Bulk | 100 : 1 | 97 | 24 | 12 500 | 1.9 |
Monomer conversion determined by 1H NMR spectroscopy.
Molecular weight and dispersity determined by SEC-MALS in DMF.