Aliphatic saturated sulfones C6-C14: possible candidates for a new aprotic inert solvent: part 1: melting of individual substances

Авторы: Belova Ekaterina V., Shakirova Julia D., Kulikov Leonid A., Bobyleva Zoya V., Uspenskaya Irina A.
Журнал: Journal of Thermal Analysis and Calorimetry
Том: 148
Год издания: 2023
Издательство: Akademiai Kiado
Местоположение издательства: Hungary
Первая страница: 5637
Последняя страница: 5646
DOI: 10.1007/s10973-023-12128-x
Аннотация: 1H NMR, DSC and TG were used for investigating nine aliphatic sulfones. The most suitable solvent – diethyl ether– was used for its purification by recrystallisation. The thermal stability of these substances was studied; it is comparable to eth-ylene carbonate and can be increased by using a RSO2R' with (a) longer carbon chain in any R and R' and (b) linear R and/or R' instead of branched one(s). Melting parameters of 8 sulfones were obtained for the first time and the enthalpy and temperature of (n-C4H9)2SO2 were revised. Four of 9 sulfones have melting point below the room temperature. A C4 radical possibly is optimal to get a lower m.p. Melting point decreases in a row both linear R > both branched R ≥ one branched R. Additionally, the attempts to reevaluate SO2 increment value were made.
Добавил в систему: Белова Екатерина Васильевна

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