Heat capacities and thermodynamic properties of [Co(AIP)(BPY)0.5·H2O]n·2nH2O

• [Co(AIP)(BPY)0.5·H2O]n·2nH2O was synthesized.
• It is characterized by powder X-ray diffraction, FT-IR spectra.
• Molar heat capacities of [Co(AIP)(BPY)0.5·H2O]n·2nH2O were measured.
• Its thermodynamic parameters (entropy and enthalpy) were derived.
• Its thermal decomposition mechanism for the material was investigated.

One three-dimensional coordination polymer [Co(AIP)(BPY)0.5·H2O]n·2nH2O (AIP, 5-aminoisophthalic; BPY, 4,4′-bipyridine) has been synthesized solvothermally and characterized by powder X-ray diffraction, FT-IR spectra. The molar heat capacities of [Co(AIP)(BPY)0.5·H2O]n·2nH2O were measured by temperature modulated differential scanning calorimetry (TMDSC) over the temperature range of 188–300 K for the first time, and no phase transition or thermal anomaly was detected in the experimental temperature range. The thermodynamic parameters relative to the standard reference temperature 298.15 K were derived based on the above molar heat capacities data. Besides, a two-step sequential thermal decomposition mechanism for the material was investigated through the thermogravimetry (TG-DTG) from 300 to 1073 K.