Thermodynamic and thermal properties of the C60-l-lysine derivative. (December 2017)

• Record Type: Journal Article
• Authors: Lelet, Maxim I.; Semenov, Konstantin N.; Andrusenko, Elena V.; Charykov, Nikolay A.; Murin, Igor V.
• Is Part Of: Journal of chemical thermodynamics. Volume 115(2017)
• Page Start: 7
• Page End: 11
• Publication Date: 2017-12
• Subjects: Fullerene -- l-lysine -- Heat capacity -- Enthalpy -- Entropy -- Gibbs function; Thermodynamics -- Periodicals; Thermochemistry -- Periodicals; Thermodynamique -- Périodiques; Thermochimie -- Périodiques; Thermochemistry; Thermodynamics; Periodicals; 541.369
• DOI: 10.1016/j.jct.2017.07.017
• Languages: English
• ISSNs: 0021-9614

Abstract

Highlights: Heat capacities of C60 -Lys derivative were measured between T = 13 K and T = 326 K. Standard thermodynamic functions of crystalline C60 (C6 H14 N2 O2 )2 were calculated over the range from T → 0 to 321.4 K. Abstract: In the present research, the low-temperature molar heat capacity, Cp, m °, of C60 –l -lysine derivative was measured using adiabatic calorimetry from T = 13 K to T = 326 K. The respective molar third law entropy at T = 298.15 K, S m °, was calculated giving (1110 ± 3) J·K −1 ·mol −1 for C60 –l -lysine derivative. Smoothed Cp, m °( T ) values between T → 0 K and 320 K are presented along with the values for S m ° and the functions [ H m °( T ) – H m °(0)] and [ G m °( T ) – H m °(0)]. The standard molar entropy of formation, Δf S m °, at T = 298.15 K was calculated for the compound under study in the crystalline state giving −1916 ± 5 J·K −1 ·mol −1 . The complex thermal analysis of the C60 -Lys crystallohydrate was performed from T = 300 to T = 1323 K.