DIRECT SYNTHESIS OF LEAD(II) COMPLEXES WITH TRIETHANOLAMINE USING LEAD(II) OXIDE AS STARTING MATERIAL

A number of lead(Ir) complexes containing triethanolamine (L) is reported. The compounds were identified and characterized by chemical analyses and IR investigations. The crystal structure of bis(triethanolamine)lead(II) acetate was determined by X-ray crystallographic analysis. The compound crystallizes in space group C2/c with a=10.373(2), b=16.079(2), c=13.707(3) Angstrom, beta = 99.36(2)degrees, V= 2255.7 Angstrom(3), Z = 4, d(calculated) = 1.84g cm(-3) The structure was refined by least-squares methods to a final value of the R of 0.025 for 3185 reflections with I> 3 sigma(1). The complex consists of eight coordinated [PbL(2)](2+) cations and two CH3COO- anions joined together by hydrogen bonds between the oxygen atoms of the carboxyl groups and the hydroxyl hydrogens of ligands. The lead atom lies on a two-fold rotation axis and the structure of the coordination polyhedron is a distorted trigonododecahedron.