Magnetic and spin effects during dioxouranium(VI) succinate photolysis

Rykova, S.V.; Khudyakov, I. V.; Skakovsky, E. D.; Tychinskaya, L. Yu.; Ogorodnikova, M. M.

doi:10.1016/1010-6030(92)85126-f

Cited by 9 publications

(1 citation statement)

References 4 publications

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“…The coefficient , i 3 in eq 47 is However, since the radical reorientation rate exceeds considerably both the RP decay rate and the RP spin evolution rate, an overall randomization occurs and, therefore, the total recombination probability is P, = PR + PL where PR = PL. Then, it follows from eq 48 (49) where , l 3 can be deduced experimentally by chemical analysis of R and L ketones, or by monitoring circular dichroism as a function of ketone conversion. These considerations and, in particular, the important equality PR = PL, which implies the magnetic equivalence of the reaction trajectories for R and L recombination in the common RP precursor, has been reliably confirmed e~perimentally.~~ Knowing P,, one can easily evaluate the probability Pd of another competing reaction (disproportionation), measuring the yield x of its product, benzaldehyde:…”

Section: B Racemizationmentioning

confidence: 99%

MIE versus CIE: Comparative Analysis of Magnetic and Classical Isotope Effects

Бучаченко¹

1995

Chem. Rev.

110

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Section: B Racemizationmentioning

confidence: 99%

MIE versus CIE: Comparative Analysis of Magnetic and Classical Isotope Effects

Бучаченко¹

1995

Chem. Rev.

110

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Photochemically Induced Dynamic Nuclear Polarization

Goez

1997

Advances in Photochemistry

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Magnetic Field and Magnetic Isotope Effects upon Reactions of Heavy Atom‐Centered Radicals

Hayashi

Wakasa

Sakaguchi

1995

J Chinese Chemical Soc

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We present our recent studies on magnetic field effects (MFEs) observed in reactions of heavy atom‐centered radicals such as Si‐,P‐, Ge‐, and Sn‐radicals with a ns‐laser photolysis technique under magnetic fields of 0–10 T. Although the MFES of heavy atom‐centered radicals are much smaller than those of C‐radicals due to the spin‐orbit interaction of heavy atoms, we have found appreciable MFEs in many reactions of such heavy atom‐centered radicals. Comparing the MFES of C‐radicals with those of heavy atom‐centered ones, we have explained the MFEs of heavy atom‐centered radicals in terms of the Δg and relaxation mechanisms. We have found that the separation between the MFES due to the Δg mechanism and those due to the relaxation one is possible with the enhancement of spin relaxation by the addition of a paramagnetic ion. We have also tried to enrich magnetic isotopes of heavy atoms with the magnetic isotope effect (MIE), using the reactions which show fairly large MFES. Recently, we have succeeded in enriching 73Ge. This is the heaviest isotope which has so far been enriched with the MIE from samples of natural abundance.

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Magnetic and spin effects during dioxouranium(VI) succinate photolysis

Cited by 9 publications

References 4 publications

MIE versus CIE: Comparative Analysis of Magnetic and Classical Isotope Effects

MIE versus CIE: Comparative Analysis of Magnetic and Classical Isotope Effects

Photochemically Induced Dynamic Nuclear Polarization

Magnetic Field and Magnetic Isotope Effects upon Reactions of Heavy Atom‐Centered Radicals

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