SYNTHESIS AND STRUCTURE OF DINITRATO (N, N, N', N'-TETRABUTYLSUCCINAMIDE) URANYL (II)

The complex UO2[Bu2NCO(CH2)2CONBu2] (NO3)2 has been prepared by extrac tion method. The molecular and crystal structures of the complex have been determined by four-circle X ray diffractometer. The crystal cell parameters are found to be a = b = 3.3207 (8), c = 1.0711 (4) nm, alph a = beta = gamma = 90. 00 (0)-degrees, V = 11. 811 (7) nm3, Z = 16, D( c) = 1. 65 g.cm-3. The crystal belongs to space group I4(1)/alpha of t etragonal system. The result. reveals that uranyl ion is coordinated t o six oxygen atoms, four of them are from two nitrate groups and other two are from two carbonyl groups of organic ligand. Two nitrate group s are repulsed by seven membered ring to the one side, so the structur e of hexagonal bipyramid with center of uranium atom is distorted.