Table 2. Synthesis of atactic and isotactic poly(thiirane)s^a.

Entry	Thiirane	Conv.b	M n,theo b (kDa)	M n c (kDa)	Đ c	Tacticityd
1	(rac)-POPS	81%	7.27	8.33	1.39	54% m
2	(S)-POPS	72%	6.71	8.06	1.56	>99% m
3	(rac)-PS	96%	14.5	15.7	1.29	42% m
4	(S)-PS	>99%	15.1	14.6	1.20	93% m

^aStandard conditions for POPS: 50 : 1 [POPS] : [TCT1], Ph₄PCl (0.33 eq.), DMAc (15 mM), 60 °C, 6 h. Standard conditions for PS: 200 : 1 [PS] : [TCT1], Ph₄PCl (0.33 eq.), DMAc (15 mM), 60 °C, 3 h.

^bDetermined via¹H NMR spectroscopy of the crude reaction mixture.

^cEntries 1 and 2: determined via SEC in DMF calibrated against poly(methyl methacrylate) standards. Entries 3 and 4: determined via Waters SEC in THF calibrated against poly(styrene) standards.

^dDetermined via¹³C NMR spectroscopy.