ENRICHMENT OF GE-7O WITH THE MAGNETIC ISOTOPE EFFECT ON THE HYDROGEN ABSTRACTION REACTION OF TRIPLET BENZOPHENONE WITH TRIETHYLGERMANE IN AN SDS MICELLAR SOLUTION
M. Wakasa et al., ENRICHMENT OF GE-7O WITH THE MAGNETIC ISOTOPE EFFECT ON THE HYDROGEN ABSTRACTION REACTION OF TRIPLET BENZOPHENONE WITH TRIETHYLGERMANE IN AN SDS MICELLAR SOLUTION, Journal of the American Chemical Society, 120(13), 1998, pp. 3227-3230
Using the hydrogen abstraction reaction of triplet benzophenone with t
riethylgermane in an SDS micellar solution, we succeeded in enriching
Ge-73 with the magnetic isotope effect. At zero magnetic field, 0.5% e
nrichment of Ge-73 was observed for the cage product (diphenyl(triethy
lgermyl)methanol). With increasing magnetic field strength (B), the en
richment of Ge-73 increased initially, attaining the maximum value of
5.3% at 500 G. At higher fields (500 G < B less than or equal to 10 kG
), it decreased gradually, becoming 1.0% at 10 kG. The magnetic field
dependence of the enrichment of Ge-73 can be explained by the relaxati
on mechanism.