Table 1.

Terpolymerization of GB/PO/CO₂ catalyzed by (S,S)-[SalcyCo^IIIDNP]DNP.

Entry	fGB:POa	FGB:POb	TOF (h−1)c	Selectivity (%)d	Tg °Ce	Mn (kg/mol)f	Ð (Mw/Mn)f
PGBC-100	100:0	100:0	74	85	−7	12.4	1.20
PPGBC-87	90:10	87:13	78	86	−30	6.1	1.12
PPGBC-74	70:30	74:26	129	82	−29	6.0	1.10
PPGBC-56	50:50	56:44	144	95	−9	8.6	1.08
PPGBC-33	30:70	33:67	158	90	−12	13.6	1.11
PPGBC-22	10:90	22:78	225	99	0	9.6	1.11
PPC-100	0:100	0:100	444	>99	28	22	1.18

The reaction was performed in neat epoxide (10 mmol) in a 15 mL autoclave under 2.7 MPa CO₂ pressure at 40 °C with 2000:1 catalyst loading

^aMolar ratio of monomer feed

^bMolar ratio of monomer incorporation in polymer chain

^cTurnover frequency (TOF) =  mole of product (polycarbonates)/mol of cat. per hour. Reactions were stopped at ~60% conversion

^dPercent of polymer formed vs. cyclic carbonate as determined by ¹H NMR

^eDetermined by DSC analysis

^fDetermined by gel permeation chromatography in THF, calibrated with polystyrene standards