Table 1. Summary of BCA polymerization performed in THF at 25 °C using several nucleophiles.

Entry	Initiator	Time (min)	Calc. Mn a	Exp. Mn b	Đ b
1	BuLi	20	12 250	8990/3.2 × 105	1.5/1.4 c
2	BuLi	240	12 250	15 144/5.0 × 105	1.7/1.3 d
3	sec-BuLi	120	12 250	18 580/3.4 × 105	1.7/1.3
4	Bu2CuLi	120	12 250	7699/3.1 × 105	1.7/1.4
5	LiI	120	12 250	5050/1.4 × 105	1.2/1.4
6	PPh3	120	12 250	3.5 × 105	1.7

^aCalculated through the experimental ratio [M]/[I] (80 : 1) assuming that every initiator molecule initiates one polymer chain. Expressed in g mol^–1.

^bExperimental data obtained by GPC, when more than one peak is observed, the data related to each polymeric species are included from low to high molecular weight. The same pattern is extended to the corresponding dispersities and the relative peak areas.

^cArea of each peak: 53/47.

^dArea of each peak: 89/11.