STRUCTURE OF ((UO-2)-4O-2C1-4(C-4H-8O)-2(H-2O)-4), A TETRANUCLEAR URANYL(VI) COMPLEX
Abst-Tetraaqua-efop-tetra-mu-chloro-gn-di-mu-3- oxo-cdijlmqr-octaoxo-hf-bis(tetrahydrofuran)tetra- uranium, M-r = 1470.20, orthorhombic, Cmca, a = 16.865 (5), b = 11.017 (3), c = 21.747 (4) ALPHA, V = 4040 (3) ALPHA3, Z = 4, D-x = 2.417 Mg m-3, lambda(Mo Kalpha) = 0.71073 ALPHA, mu = 15.4643 mm-1, F(OOO) = 2544, T = 295 (1) K, R = 0.051 for 811 observed reflections. The crystal structure consists of discrete uncharged tetrameric molecules separated by van der Waals contacts. The molecular structure is quite unusual with four uranyl groups linked through double bridges of two types: one double O bridge and four O/Cl bridges. The coordination polyhedron about each U atom is a pentagonal bipyramid with the uranyl O atoms in apical positions while the bridging C1 and O atoms lie in the equatorial plane. The remaining equatorial positions are occupied by tetrahydrofuran or water molecules.
Bibliographic Reference: ACTA CRYST., VOL. C43 (1987), PP. 837-839
Record Number: 1989126051700 / Last updated on: 1989-03-01
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