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. 2022 Feb 14;7(8):6900–6910. doi: 10.1021/acsomega.1c06560

Table 2. Ethylene Copolymerization with 1-Dodecene (DD), 1-Tetradecene (TD), and 1-Hexadecene (HD) by the Cp*TiCl2(O-2,6-iPr2-4-SiEt3C6H2)–MAO Catalyst Systema.

run cat./μmol α-olefin conc.b/M E/atm yield/mg activityc Mnd × 10–4 Mw/Mnd cont.e/mol %
1 0.001     6 18.1 181 000 insoluble    
2 0.01 DD 0.75 2 329 329 000 8.9 1.86 18.2
3 0.0025 DD 0.75 4 123 492 000 11.4 1.81 15.6
4 0.001 DD 0.30 6 83.5 835 000 25.0 2.05 5.1
5 0.001 DD 0.45 6 88.9 889 000 18.5 1.97 6.6
6f 0.001 DD 0.75 6 104 1 040 000 16.7 1.62 15.0 (15.5)g
7 0.0025 DD 1.13 6 309 1 240 000 11.4 1.74 16.0
8 0.0025 DD 1.50 6 363 1 450 000 11.6 1.76 17.6
9 0.001 DD 0.30 8 163 1 630 000 30.1 2.09 4.0
10 0.001 DD 0.45 8 177 1 770 000 23.6 1.95 5.3
11 0.001 DD 0.60 8 177 1 770 000 20.6 1.96 6.1
12 0.001 DD 0.75 8 235 2 350 000 16.9 1.89 7.2 (8.0)g
13 0.001 DD 0.90 8 283 2 830 000 14.7 1.98 8.5
14 1.0 DD 0.75   477 954 12.7 1.94 100
15 0.01 TD 0.67 2 130 130 000 12.2 1.74 15.4
16 0.0025 TD 0.67 4 58.3 233 000 13.1 1.98 12.0
17 0.001 TD 0.27 8 120 1 200 000 43.5 2.95 3.0
18 0.001 TD 0.40 8 299 2 990 000 35.5 2.49 4.5
19 0.001 TD 0.27 6 387 3 870 000 29.4 2.31 4.8
20 0.001 TD 0.40 5 169 1 690 000 17.6 2.05 8.8
21 0.001 TD 0.40 6 222 2 220 000 23.4 2.25 6.3
22 0.001 TD 0.40 7 234 2 340 000 29.1 2.10 5.2
23 0.001 TD 0.54 6 207 2 070 000 18.1 1.95 8.1
24 0.001 TD 0.67 6 122 1 220 000 14.0 1.87 11.4 (12.0)g
25h 0.001 TD 0.67 6 136 1 360 000 16.6 1.96 10.0
26 0.001 TD 0.67 8 442 4 420 000 15.2 2.00 6.6
27 0.0025 TD 1.01 6 250 1 000 000 11.2 1.78 13.5
28 0.005 TD 1.34 6 162 323 000 12.1 1.97 15.2
29 1.0 TD 0.67   329 658 17.6 1.98  
30 0.0005 HD 0.58 2 70.8 142 000 11.0 1.66 15.0
31 0.001 HD 0.58 4 176 1 760 000 13.8 1.86 11.4
32 0.0005 HD 0.35 6 97.1 1 942 000 25.9 1.98 6.1
33 0.0005 HD 0.58 6 95.2 1 900 000 18.7 1.96 9.7
34h 0.0005 HD 0.58 6 156 3 120 000 15.2 1.96 9.3
35 0.001 HD 0.87 6 190 1 900 000 14.2 1.90 12.5
36 0.001 HD 1.16 6 257 2 570 000 14.1 1.83 14.0
37 0.001 HD 0.23 8 180 1 800 000 43.3 2.57 2.7
38 0.001 HD 0.35 8 244 2 440 000 26.9 2.57 4.4
39 0.0005 HD 0.58 8 180 3 600 000 21.4 1.96 6.4 (7.1)g
40 1.0 HD 0.58   134 268 7.8 1.51  
a

Conditions: total volume, 30 mL; MAO, 2.0 mmol; 6 min (runs 14, 29, 40: total 6.0 mL, 30 min); and 25 °C.

b

Initial concentration (mmol/mL).

c

Activity = kg-polymer/mol-Ti·h.

d

GPC data in o-dichlorobenzene vs polystyrene standards.

e

α-Olefin in copolymer (mol %) estimated using 1H NMR spectra (selected data are shown in SI).

f

Polymerization data cited from ref (31).

g

α-Olefin in copolymer (mol %) estimated using 13C NMR spectra (selected data are shown in SI).

h

Polymerization at 50 °C.