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

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 ethylene carbonate and can be increased by using a RSO 2 R' 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-C 4 H 9 ) 2 SO 2 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 SO 2 increment value were made.