NICKEL(II) AND COBALT(II) COMPLEXES OF 2,4-DIAMINOTHIENO[2,3-D]-PYRIMIDINES

The reactions of methyl-2-amino-4-diethylamino thieno[2,3-d]pyrimidine 6-carboxylate, methyl-2-amino-4-ethylphenylamine thieno-[2,3-d]pyrimidine-6-carboxylate) and methyl-2-amino, 4-morpholino-thieno-[2,3-d]pyrimidine-6-carboxylate with Ni(II) and Co(II) halides produced complexes of the general formula ML2X2 (where L is thieno pyrimidine and X is Cl or Br). The complexes were characterized by elemental analyses, conductivity and magnetic susceptibility measurements and spectroscopy. All of the complexes were found to have pseudotetrahedral structures with the metal coordinated through the N(1) site of the thieno-[2,3-d]-pyrimidine.