Table 3. Ethylene/Polar Monomer Copolymerization of C7a.
| entry | monomer (M) | temp. (°C) | yield (g) | TOF (103)(h–1) | B/1000Cb | Mnc (kg mol–1) | Đc | incorp.b (mol %) | Tmd (°C) | Tgd (°C) |
|---|---|---|---|---|---|---|---|---|---|---|
| 1e | 40 | 3.2 | 11.4 | 57 | 111.6 | 1.71 | 68.7 | –36.0 | ||
| 2 | VTEoS [0.5] | 40 | 0.8 | 0.7 | 52 | 66.3 | 1.60 | 3.1 | 56.2 | –55.0 |
| 3f | VTEoS [0.5] | 60 | 1.2 | 2.1 | 69 | 33.0 | 1.68 | 4.6 | 27.2 | –64.7 |
| 4 | VTEoS [1.0] | 40 | 0.45 | 0.4 | 50 | 48.1 | 1.79 | 5.9 | 46.8 | –63.6 |
| 5g | MA [0.1] | 40 | 0.15 | 0.06 | 61 | 55.6 | 1.57 | 0.34 | 73.1 | –39.2 |
| 6g | MA [0.1] | 60 | 0.3 | 0.1 | 83 | 35.8 | 1.66 | 2.2 | 26.4 | –51.9 |
| 7g | VAc [0.25] | 60 | 0.5 | 0.2 | 78 | 53.3 | 1.65 | 0.26 | 46.9 | –49.8 |
a
Conditions: 20 μmol of C7, 1.2 equiv of AgBArF, 400 psi ethylene, 45 mL of toluene, 120 min.
b
Determined by 1H NMR in D2-tetrachloroethane at 125 °C.
c
Determined by GPC in 1,2,4-trichlorobenzene at 160 °C using polystyrene calibration.
d
Determined by differential scanning calorimetry.
e
10 μmol of C7, 60 min.
f
10 umol of C7
g
240 min. [M] = molar concentration, TOF = Turnover Frequency, Mn = Number-Average Molecular Weight, Đ = Dispersity, Tm = Melting Temperature, VTEoS = vinyltriethoxysilane, MA = methyl acrylate, VAc = vinyl acetate.