SYNTHESIS, CHARACTERIZATION AND X-RAY CRYSTAL-STRUCTURE OF ETHYLENEDIAMINE-(OROTATO)PALLADIUM(II)

Reaction of the hydrolysis product of dichloroethylenediaminepalladium (II) with orotic acid methyl ester in aqueous or methanol-water media gives an orotic acid complex: [Pd(C5H2N2O4)(C2H8N2)](H2O)0.5. The comp lex was characterized by UV, H-1 NMR and X-ray diffraction. The compou nd crystallizes in the space group P1, a = 9.742(1), b = 10.535(1), c = 11.113(1) angstrom, alpha = 100.60(1), beta = 103.165(7), gamma = 10 9.22(1)degrees, V = 1006.2(2) angstrom3, Z = 2. It appears that during the reaction process hydrolysis of the ester function arises and that the compound obtained is a complex of orotic acid.