
%0 Journal Article
%A Honan, GJ 
%A Kepert, DL 
%A Lincoln, SF 
%A Patrick, JM 
%A White, AH 
%T Crystal structure of Aquatetrakis(N-formylpiperidine)dioxouranium(VI) Bisperchlorate
%J Australian Journal of Chemistry
%D 1980/01/01
%V 33
%N 1
%P 69-75
%K 
%R https://doi.org/10.1071/CH9800069
%U https://www.publish.csiro.au/paper/CH9800069 
%X The crystal structure of the title compound, [UO2{OCHN(CH2)5}4(H2O)] (ClO4)2, has been determined by single-crystal X-ray diffraction at 295 K and refined by least squares to a residual of 0.051 for 3113 'observed' reflections. Crystals are monoclinic, C2/c, a 16.945(2), b 12.711(2), c 17.304(2)&#506;, &#946; 107.76(1)&#176;, Z 4. The uranyl moiety [U=O, 1.76(2)&#506;] is five-coordinated in the equatorial plane by the water molecule [U-O, 2.436(8)&#506;] and four organic ligands [U-O, 2.379(8), 2.396(13)&#506;]. The angles O-U-O in the equatorial plane range from 70.3(3) to 73.6(3)&#176;; O=U-0 range between 86.7 and 95.3&#176;. The angle O=U=O is 177.8(3)&#176;. The stereochemistry of seven-coordinate uranyl compounds is examined by using repulsion theory. 
