Enthalpimetric measurements in solid—solid reactions. The formation of intermolecular charge-transfer complexes

The possibility of obtaining thermodynamic parameters from solid—solid interaction reactions in the formation of charge-transfer (CT) complexes has been studied carrying out the syntheses directly in a DSC apparatus. The interactions between the donor p-bromophenol and the acceptors p-benzoquinone, chloranyl and bromanyl have been considered. It was observed that the solid—solid interaction occurs only for the system p-bromophenol:p-benzoquinone; for the system p-bromophenol:bromanyl the reaction occurs in the molten donor; the acceptor chloranyl does not react.