Volatile adducts of uranyl nitrate. Sublimation and mass spectra
Adducts of uranyl nitrate with strong neutral ligands: trimethyl phosphate (TMP), triethyl phosphate (TEP), trimethylphosphine oxide (TMPO), hexamethylphosphoric triamide (HMPTA), with a 1:2 composition, and phenanthroline (phen) (with a 1:1 composition), and also a complex with a composition of UO/sub 2/(NO/sub 3/) (NCS) x 2HMPTA were synthesized. The above enumerated compounds sublime in vacuo (adducts with TMP and TEP in a vapor current of the corresponding trialkyl phosphate) with a partial decomposition at temperatures of 160-280/sup 0/C. A mass-spectrometric examination of the complexes synthesized has been carried out. It was shown that after splitting off of the ligand, the fragmentation of the adducts with TMPO and phen proceeds by the path consisting in splitting off of the NO/sub 2/ group, while in the case of an adduct with TEP, a rearrangement takes places with the elimination of C/sub 2/H/sub 5/NO/sub 3/. The last path is similar to the processes proceeding during the thermal decomposition of UO/sub 2/(NO/sub 3/)/sub 2/ x 2TBP.
- OSTI ID:
- 6281174
- Journal Information:
- Sov. Radiochem. (Engl. Transl.); (United States), Journal Name: Sov. Radiochem. (Engl. Transl.); (United States) Vol. 29:4; ISSN SVRDA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
400201* -- Chemical & Physicochemical Properties
ACTINIDE COMPLEXES
ACTINIDE COMPOUNDS
ADDUCTS
AMIDES
AROMATICS
AZAARENES
CHARGED PARTICLES
CHEMICAL REACTIONS
COMPLEXES
COMPLEXOMETRY
DECOMPOSITION
DISSOCIATION
EVAPORATION
EVEN-EVEN NUCLEI
HETEROCYCLIC COMPOUNDS
IONIZATION
IONS
ISOTOPE APPLICATIONS
ISOTOPES
LABELLED COMPOUNDS
LABELLING
LIGANDS
LIGHT NUCLEI
MASS SPECTRA
MOLECULAR IONS
MOLECULAR STRUCTURE
NITRATES
NITROGEN COMPOUNDS
NUCLEI
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
ORGANIC PHOSPHORUS COMPOUNDS
OXYGEN 18
OXYGEN COMPOUNDS
OXYGEN ISOTOPES
PHASE TRANSFORMATIONS
PHENANTHROLINES
PYROLYSIS
SPECTRA
STABLE ISOTOPES
STRUCTURAL CHEMICAL ANALYSIS
SUBLIMATION
THERMOCHEMICAL PROCESSES
TRACER TECHNIQUES
URANIUM COMPLEXES
URANIUM COMPOUNDS
URANYL COMPLEXES
URANYL COMPOUNDS
URANYL NITRATES
VOLATILITY