Table 1 Ethylene polymerization results in toluene^a

Entry (cond.)	Precatalyst	T [C°]	Yield [g]	TOF^b	M_n^c [10³ g mol⁻¹]	M_w/M_n^c	T_m^d [°C]	Crystallinity^d [%]	Branches/1000 C^e
1^A	2/Pyr	30	2.21	31.5	275	1.5	133	48	2.8
2^B	2/Pyr	50	2.87	136.4	27	1.7	121	47	9.1
3^C	2/Pyr	70	0.17	16.2	8	2.0	114	47	14.0^f
4^A	1-C₄F₉/Pyr	30	3.60	51.4	489	1.5	133	58	0.8
5^B	1-C₄F₉/Pyr	50	6.43	305.6	305	1.3	131	49	2.2
6^D	1-C₆F₁₃/Pyr	15	5.26	6.3	1190	1.3	136	49	n.d.
7^A	1-C₆F₁₃/Pyr	30	5.13	73.2	844	1.5	134	56	0.7
8^B	1-C₆F₁₃/Pyr	50	8.17	388.4	308	1.4	131	46	1.9
9^C	1-C₆F₁₃/Pyr	70	8.00	760.6	33	1.6	125	50	6.5
10^A	1-C₈F₁₇/Pyr	30	3.52	50.2	515	1.5	135	60	0.7
11^B	1-C₈F₁₇/Pyr	50	3.83	182.1	218	1.5	132	46	1.7

^aPolymerization conditions: (A) 5 µmol precatalyst, 30 -min reaction time, (B) 3 µmol precatalyst, 15 min reaction time, (C) 3 µmol precatalyst, 7.5 min reaction time, (D) 5 µmol precatalyst, 5 h reaction time; all experiments performed in 100 mL of toluene with 40 bar ethylene pressure; ^bgiven in 10³ x mol [C₂H₄] x mol⁻¹ [Ni] x h⁻¹_. ^cDetermined by GPC at 160 °C in trichlorobenzene. ^dDetermined by DSC with 10 K min⁻¹ heating rate (data from second heating cycle). ^eDetermined by ¹³C NMR spectroscopy. ^fIncluding 2.3 ethyl branches

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