Temperature-dependent Fourier transform infrared and differential scanning calorimetry studies of zinc carboxylates
作者： O. Berkesi , T. Katona , I. Dreveni , J.A. Andor , J. Mink
DOI: 10.1016/0924-2031(94)00059-P
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摘要: Abstract The temperature-induced formation of an intermediate modification (the precursor the tetranuclear oxo complex) straight-chain zinc carboxylates (even numbered between C6 and C18) was studied by means temperature-dependent Fourier transform infrared spectroscopy differential scanning calorimetry. this required only low interaction alkyl chains, which could be caused temperature, solvent or geometric incompatibility. spectra proved that rearrangement carboxylate groups destruction all-trans arrangement chains occurred simultaneously during solid-liquid transition samples. A simple linear model employed to interpret measured enthalpies calculated entropies. enthalpy contributions predominated in transitions different modifications polymeric sheet structure carboxylates.
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