Influence of hydrogen bonding on the thermal behaviour of some amides and thioamides

The thermal behaviour of some oxamides and thiooxamides is studied by TGA and DSC techniques. The effect of the mass, the hydrogen bonding and the molecular structure on the Tonset and ΔH values is demonstrated. Special attention has been given on the nature (intermolecular versus intramolecular hydrogen bonds), the strength and the number of hydrogen bonds per molecule.