Solvent-extraction complexes of the uranyl ion. 1. Crystal and molecular structure of bis(nitrato)bis(tri-n-butylphosphine oxide)dioxouranium(VI)
Journal Article
·
· Inorg. Chem.; (United States)
The complex UO/sub 2/(NO/sub 3/)/sub 2/((C/sub 4/H/sub 9/)/sub 3/PO)/sub 2/, made by reacting UO/sub 2/(NO/sub 3/)/sub 2/.6H/sub 2/O with tri-n-butylphosphine oxide, was analyzed by single-crystal x-ray diffraction methods. The monoclinic unit cell has a = 8.496 (2) A, b = 29.630 (7) A, c = 14.063 (3) A, and ..beta.. = 94.92 (2)/sup 0/ at 23/sup 0/C; the space group is C2/c, and Z = 4. The structure was determined by the heavy-atom method and refined by least squares. Positions and anisotropic thermal parameters were adjusted for 22 nonhydrogen atoms, while hydrogen atoms were fixed in assumed positions; the agreement factor, R/sub F/, reached 0.043 for 1648 observations (> 3sigma). There are discrete molecules in the crystal consisting of uranyl ions surrounded at the equator by six oxygen atoms furnished by two bidentate nitrate ions and two tri-n-butylphosphine oxide molecules. Two of the n-butyl groups are anti and one is gauche in conformation. The bond between the phosphine oxide and the uranium atom is shorter than the corresponding water to uranium bond in each of two structurally analogous hydrates.
- Research Organization:
- Oak Ridge National Lab., TN
- DOE Contract Number:
- W-7405-ENG-26
- OSTI ID:
- 5948088
- Journal Information:
- Inorg. Chem.; (United States), Journal Name: Inorg. Chem.; (United States) Vol. 20:11; ISSN INOCA
- Country of Publication:
- United States
- Language:
- English
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Journal Article
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Tue Jan 18 23:00:00 EST 1983
· Inorg. Chem.; (United States)
·
OSTI ID:6304379
Solvent-extraction complexes of the uranyl ion. 2. Crystal and molecular structures of catena-bis(. mu. -di-n-butyl phosphato-O,O')dioxouranium(VI) and bis(. mu. -di-n-butyl phosphato-O,O')bis((nitrato)(tri-n-butylphosphine oxide)dioxouranium(VI))
Journal Article
·
Fri Dec 31 23:00:00 EST 1982
· Inorg. Chem.; (United States)
·
OSTI ID:6102234
Crystal and molecular structure of trimeric bis(1,1,1,5,5,5-hexafluoropentane-2,4-dionato)dioxouranium(VI)
Journal Article
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Tue Oct 31 23:00:00 EST 1978
· Inorg. Chem.; (United States)
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OSTI ID:6168666
Related Subjects
38 RADIATION CHEMISTRY, RADIOCHEMISTRY, AND NUCLEAR CHEMISTRY
400702* -- Radiochemistry & Nuclear Chemistry-- Properties of Radioactive Materials
ACTINIDE COMPLEXES
BOND ANGLE
COHERENT SCATTERING
COMPLEXES
CRYSTAL LATTICES
CRYSTAL STRUCTURE
DATA
DIFFRACTION
DISTANCE
EXPERIMENTAL DATA
INFORMATION
INTERATOMIC DISTANCES
MOLECULAR STRUCTURE
MONOCLINIC LATTICES
NITRATES
NITROGEN COMPOUNDS
NUMERICAL DATA
ORGANIC COMPOUNDS
ORGANIC PHOSPHORUS COMPOUNDS
OXYGEN COMPOUNDS
SCATTERING
SYNTHESIS
URANIUM COMPLEXES
URANYL COMPLEXES
X-RAY DIFFRACTION
400702* -- Radiochemistry & Nuclear Chemistry-- Properties of Radioactive Materials
ACTINIDE COMPLEXES
BOND ANGLE
COHERENT SCATTERING
COMPLEXES
CRYSTAL LATTICES
CRYSTAL STRUCTURE
DATA
DIFFRACTION
DISTANCE
EXPERIMENTAL DATA
INFORMATION
INTERATOMIC DISTANCES
MOLECULAR STRUCTURE
MONOCLINIC LATTICES
NITRATES
NITROGEN COMPOUNDS
NUMERICAL DATA
ORGANIC COMPOUNDS
ORGANIC PHOSPHORUS COMPOUNDS
OXYGEN COMPOUNDS
SCATTERING
SYNTHESIS
URANIUM COMPLEXES
URANYL COMPLEXES
X-RAY DIFFRACTION