 trans cyclic carbonate) and ether (0.00 ppm) linkages.  Expressed as a percentage of polymer formation vs the theoretical maximum (000%), determined by comparison of the relative integrals of the ^0^H NMR resonances due to the polymer (0.00 ppm) and trans cyclic carbonate (0.00 ppm).  Turnover number (TON) = number of moles of cyclohexene oxide consumed/number of moles of catalyst.  Turnover frequency (TOF) = TON/time (h).  Determined by GPC, in THF, calibrated using narrow-*M*~n~ polystyrene standards.  C