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Heat Capacity of the Halogen-Bridged Mixed-Valence Complex Pt2(dta)4I (dta) CH3CS2-)†
J. Phys. Chem. B 2002, 106, 197-202，-0001，（）：
Heat capacity of the halogen-bridged mixed-valence complex Pt2(dta)4I (dta) CH3CS2-) has been measured in the temperature region between 6 and 386 K. The complex exhibited a phase transition of order-disorder type at Ttrs) 373.4 K, from being arranged in an ordered helical form of four dta ligand planes around the central Pt-Pt axis to dynamically jumping between two orientations. Neither latent heat nor distinct thermal hysteresis was observed for the phase transition, suggesting that the phase transition is of higher-order rather than of first-order. The transition enthalpy and entropy were determined to be
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