SYNTHESIS, CHARACTERIZATION AND STRUCTURE OF COMPLEXES OF LANTHANUM(III) PICRATE WITH N,N,N',N'-TETRAPHENYL-3,6,9-TRIOXAUNDECANEDIAMIDE

Reaction of lanthanum picrate with N, N, N', N'-tetraphenyl-3, 6, 9-tr ioxaundecanediamide (TTD) yields [La (Pic)(3) (TTD)], which has been c haracterized by elemental analysis, IR and H-1 NMR spectra and molar c onductivity measurements. The complex crystallizes in the orthorhombic space group Pcab with a = 24.006(8), b = 29.140(9), c = 32.084(9) Ang strom and D-c= 1.60g cm(-3) for Z=16. Refinement of 5676 reflections ( I greater than or equal to 2.0 sigma(I)) out of 12569 unique observed reflections (2 degrees less than or equal to 2 theta less than or equa l to 42 degrees) gave R and R(w) values of 0.079 and 0.068, respective ly.