Synthesis and crystal and molecular structure of bis(nitrato)(diisopropyl (N,N-diethylcarbamyl)methylenephosphonate)dioxouranium(VI)
The complex UO/sub 2/(NO/sub 3/)/sub 2/(i-C/sub 3/H/sub 7/O)/sub 2/P(O)CH/sub 2/C(O)N(C/sub 2/H/sub 5/)/sub 2/) was prepared by the addition of UO/sub 2/(NO/sub 3/)/sub 2/.6H/sub 2/O to the carbamylmethylenephosphonate ligand in ethanol. The compound has been characterized by infrared, /sup 1/H, /sup 13/C)/sup 1/H), and /sup 31/P)/sup 1/H) NMR spectroscopy. A single-crystal X-ray analysis of this compound has been completed at -28/sup 0/C, and the complex crystallizes in the monoclinic space group P2/sub 1//n with a = 10.520 (4) angstrom, b = 10.963 (4) angstrom, c = 20.033 (8) angstrom, ..beta.. = 103.79 (3)/sup 0/, Z = 4, V = 2243.7 angstrom/sup 3/, and p/sub calcd/ = 1.99g cm/sup -3/. The structure was solved with use of heavy-atom techniques, and blocked least-squares refinement converged with R/sub F/ = 4.1% and R/sub wF/ = 3.9% for 4153 independent reflections with F greater than or equal to 4sigma(F). The molecular structure of the compound consists of a linear UO/sub 2//sup 2 +/ ion surrounded at its equator by four oxygen atoms from two bidentate nitrate ions and the phosphoryl and carbonyl oxygen atoms from a bidentate phosphonate ligand. Several important bond distances include U-O(uranyl)/sub av/ = 1.7.56(6) angstrom, U-O(phosphoryl) = 2.420 (4) angstrom, U-O(carbonyl) = 2.406 (5) angstrom, U-O(nitrate)/sub av/ = 2.512 (5) angstrom, P-O(phosphoryl) = 1.485 (5) angstrom, and C-O(carbonyl) = 1.260 (8) angstrom.
- Research Organization:
- Univ. of New Mexico, Albuquerque
- DOE Contract Number:
- AC04-79ER10465
- OSTI ID:
- 6304379
- Journal Information:
- Inorg. Chem.; (United States), Vol. 22:2
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
URANYL COMPLEXES
CHEMICAL PREPARATION
CRYSTAL STRUCTURE
MOLECULAR STRUCTURE
BOND ANGLE
COORDINATES
INTERATOMIC DISTANCES
ORGANIC NITROGEN COMPOUNDS
ORGANIC OXYGEN COMPOUNDS
ORGANIC PHOSPHORUS COMPOUNDS
X-RAY DIFFRACTION
ACTINIDE COMPLEXES
COHERENT SCATTERING
COMPLEXES
DIFFRACTION
DISTANCE
ORGANIC COMPOUNDS
SCATTERING
SYNTHESIS
URANIUM COMPLEXES
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