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The mechanism of thermal decomposition of the metal complexes of sulphamethoxazole (SMZ) viz: [Ag(SMZ)H2O], [Cd(SMZ)2(H2O)2], [VO(SMZ)2(H2O)2], [UO2(SMZ)2]H 2O, [Hg(SMZ)2(H2O)2] and [Co(SMZ)2(H2O)2]H2O has been accomplished on the basis of TG, DTG and DTA studies. The mechanism of thermal decomposition of these complexes conforms to the stoichiometry of the complexes based on elemental analysis.

The heats of formation ofn-π* andπ-π* charge-transfer interactions have been computed from the charge-transfer spectra of molecular complexes formed in the pyridinechloranil and aniline-chloranil systems.

Cyclocondensation of ethylenediamine (II) with the quinolinecarboxylic acids (I) gives the imidazolines (III) which are converted to the Mannich products (VI).