Ligating properties of model bioheterocyclics. Ill. Synthesis and characterization of the palladium(II) and platinum(II) Complexes with 3,6-disubstituted-2,7-dihydro-1,4,5-thiadinzepine derivatives

Abstract

Palladium(II) and platinum(II) halides with 3,6-disubstituted-2,7-dihydro-1,4,5-thiadiazepine derivatives (L) form complexes of general formula, [MX 2·L′] (L′ = monohydrazone, VII). During the formation of these complexes, the thiadiazepine ring underwent hydrolytic cleavage at the carbon- nitrogen double bond, the nitrogen of which is involved in coordination with the metal ions These complexes have also been obtained from mono. hydrozones of 2,2″-thiodiacetophenones. These are diamagnetic and non-electrolytes. From their it, n.m.r., electronic spectra, T.G.A., D.T.A., magnetic susceptibility and conductivity measurements, these complexes have been assigned a square planar structure.