Polymerization of racemic lactide with cationic alkyl indium complexes^a.

	Catalyst	Conv.b (%)	M n Cal c (Da)	M n d (Da)	Đ e	i*f (%)
1	2a	<1	—	—	—	—
2	2b	20	—	—	—	—
3	2c	94	34 000	130 000	1.32	26

^aReactions were performed for 24 h in toluene at 100 °C. [rac-LA] = 1.6 M, [cat] = 6.4 mM. [rac-LA]/[cat] = 250.

^bConversion was monitored by ¹H NMR spectroscopy.

^c M _{n Cal} = calculated number averaged molecular weight = [rac-LA]/[cat] × conversion × molar mass of rac-LA.

^d M _n determined through GPC in THF.

^eDispersity = M_w/M_n.

^fInitiation efficiency = (M_{n Cal}/M_n) × 100.