Thermodynamics of bis-dioxolene cobalt complex with imino-pyridine functionalized by TEMPO moiety

•The heat capacity of bis-dioxolene cobalt complex with imino-pyridine functionalized by TEMPO moiety was determined.•Thermodynamic characteristics of the phase transition were analyzed.•The standard thermodynamic functions of above complex were calculated. Firstly in the present research, the heat capacity of bis-dioxolene cobalt complex with imino-pyridine functionalized by TEMPO moiety (TEMPO-Im-Py)Co(3,6-DBSQ)2 was measured over the range T = (6 and 347) K by the precise adiabatic vacuum calorimeter. In the temperature interval of T = (220 to 285) K, the phase transition in the crystalline state was observed, and its standard thermodynamic characteristics were determined. The standard thermodynamic functions (p° = 0.1 MPa) of (TEMPO-Im-Py)Co(3,6-DBSQ)2(cr), namely Cp,mo, Δ0THmo, Δ0TSmo and Δ0TGmo, were calculated using the obtained experimental data from T → 0 to 350 K. The low-temperature (T