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'Dioxouranium VI' in keywords Facet   Publication Year 1997  [X]
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1Author    VladimirM. Amirkhanov3, Joachim Sielerb, VictorA. Trusha, VladimirA. Ovchynnikov3, KonstantinV. DomasevitchaRequires cookie*
 Title    Synthesis, IR and X-Ray Studies of a Dioxouranium(VI) Nitrate Complex with N,N'-Tetraethyl-NM -trichloracetylphosphortriamide  
 Abstract    A new dioxouranium(VI) nitrate complex with N,N'-tetraethyl-N"-trichloracetylphosphor-triamide (HL = CCl3C(0)N(H)P(0)(NEt2)2) of composition U0 2 (HL)2(N0 3)2 (1) has been synthesised. The IR spectroscopic data reveal that the ambidentate ligand is coordinated to the metal center in a monodentate manner via the phosphoryl oxygen atom. The crystal and molecular structure of 1 has been determined from X-ray diffraction data (triclinic, space group Pi with a = 9.225(2), b = 10.360(2), c = 12.249(2) A, a = 100.02 (1),/3 = 103.81(1), 7 = 108.80 (1)°, Z = 1; R = 0.037 for 4092 unique reflections. The structure is made up of centrosymmetric molecules in which the neutral ligands HL are monocoordinated. Phosphoryl and carbonyl groups of the HL moieties are in the trans positions to each other. The axial vertices of the distorted hexagonal bipyramid of uranium are occupied by two oxo ligands [U-0 1.753(5) A] while six oxygen atoms of phosphoryl and nitrate groups lie in the equatorial plane [U-0 2.347(5)-2.547(6)A], 
  Reference    Z. Naturforsch. 52b, 1194—1198 (1997); received February 24 1997 
  Published    1997 
  Keywords    Dioxouranium(VI), Carbacylamidophosphates, X-Ray 
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 TEI-XML for    default:Reihe_B/52/ZNB-1997-52b-1194.pdf 
 Identifier    ZNB-1997-52b-1194 
 Volume    52