Electron transfer in Bis((8)annulene)f-element systems

Technical Report · Mon Aug 01 04:00:00 EDT 1988

OSTI ID:6843168

Eisenberg, D C

The rate of electron exchange between potassium bis(t,butyl(8)- annulene)ytterbate(II) and potassium bis(t-butyl(8)annulene)- ytterbate(III) has been measured by NMR line broadening techniques. Electron exchange studies have been extended to uranium, neptunium, and plutonium systems. This involved the first isolation and thorough characterization of the reduction product of uranocene. Bis(t,butyl(8)annulene) compounds were prepared for neptunium III and IV and for plutonium III and IV. The /sup 1/H NMR spectra of all of these compounds are reported. In all of these systems electron exchange occurs on the /sup 1/H NMR time scale. The ability or inability to freeze out the exchange in the different systems is consistent with the rate and mechanism observed in the ytterbium system. The reduction of biuranocenylene is reported, as are the x-ray crystal structures for potassium bis((8)annulene)ytterbate(III) and potassium bis(methyl(8) annulene)uranate(III). Comparison of these structures with previously solved ytterbium(II) and uranium(IV) bis((8)annulene) structures allows for determination of the effect of oxidation state of the central metal on structure.

• Research Organization: Lawrence Berkeley Lab., CA (USA)
• DOE Contract Number: AC03-76SF00098
• OSTI ID: 6843168
• Report Number(s): LBL-25834; ON: DE89000555
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360602 -- Other Materials-- Structure & Phase Studies
360603 -- Materials-- Properties
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201* -- Chemical & Physicochemical Properties
ACTINIDE COMPLEXES
ACTINIDE COMPOUNDS
ALKALI METALS
BOND LENGTHS
CHEMICAL BONDS
CHEMICAL PREPARATION
CHEMICAL REACTIONS
COMPLEXES
CRYSTAL STRUCTURE
DIMENSIONS
ELECTRON TRANSFER
ELEMENTS
HYDROGEN 1
HYDROGEN ISOTOPES
ISOTOPES
KINETICS
LENGTH
LIGHT NUCLEI
LINE BROADENING
MAGNETIC RESONANCE
MAGNETISM
METALS
NEPTUNIUM COMPLEXES
NMR SPECTRA
NUCLEAR MAGNETIC RESONANCE
NUCLEI
ODD-EVEN NUCLEI
PARAMAGNETISM
PLUTONIUM COMPLEXES
POTASSIUM
RARE EARTH COMPLEXES
REACTION KINETICS
REDUCTION
RESONANCE
SPECTRA
STABLE ISOTOPES
SYNTHESIS
TRANSURANIUM COMPLEXES
URANIUM COMPOUNDS
YIELDS
YTTERBIUM COMPLEXES