Abstract
AbstractThe enthalpies of combustion in oxygen at 298, 15 K of 7‐oxabicyclo[4.1.0]heptane, ΔH(1) = −3 624,9 ± 0,6 kJ·mol−1, and of poly(oxy‐1,2‐cyclohexylene), ΔH(am) = −3528,2 ± 1,4 kJ · mol−1 were measured by high‐precision bomb calorimetry. The enthalpy of polymerisation was derived, ΔH(1→am) = −96,7 ± 1,5 kJ·mol−1. Polymer samples from three separate preparations were found to be indistinguishable in their enthalpies of combustion and in their 13C NMR spectra.
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