L-5-OXO-3-THIOXO-2,3,4,5-TETRAHYDRO-1,2,4-TRIAZINE COBALT(II) COMPLEXES

Cobalt(II) complexes of l-5-oxo-3-thioxo-2,3,4,5-tetrahydro-1,2,4-tria zine (taz) were prepared by reacting the triazine with the correspondi ng cobalt salt. The isolated compounds were of the types: [CoCl2(taz)] , [CoX2(taz)2(H2O)2] (X = Br or I), [CoX2(taz)2] (X = Br, SCN or NO3) and [Co(taz)2(H2O)2]X2(X = ClO4, BF4 or NO3). Conductance, magnetic an d spectroscopic (i.r. and vis.) data were used for structural assignme nts. Pseudooctahedral and pseudotetrahedral structures are proposed fo r the complexes, with the triazine molecule acting either as a monoden tate nitrogen-donor or a bidentate nitrogen-sulphur-donor ligand.