Repozytorium
Wyszukaj
Kolekcje
Inne
31 P hyperfine interaction in a new type of phosphorus-containing iminoxy free radicals. An ESR study.
Autorzy
Rok wydania
1992
Czasopismo
Magnetic Resonance in Chemistry
Numer woluminu
30
Strony
163-168
DOI
10.1002/mrc.1260300213
Kolekcja
Język
Angielski
Typ publikacji
Artykuł
Iminoxy radicals of a new type, having the general formula RC(NO˙)P(O)(OEt)2, were synthesized and characterized by means of ESR spectroscopy. The presence of two isomers due to the different position of the CNO˙ fragment with respect to the R substituent and the P atom, and the relative stability of the isomers, was established. The influence of the R substituent on the relative population of the isomers was found. The nitrogen hyperfine constants for the isomers differ by about 10%, while the phosphorus hyperfine constant for the less populated isomer is about six time greater, reaching a value of 60 G. A linear correlation was found between the values of this hyperfine constant and Dimroth–Reichardt ET(30)solvent parameters. The solvent dependence of the 31P hyperfine constant was shown to be stronger than the dependence found for the 14N hyperfine constant of nitroxides and iminoxyls.
Adres publiczny
https://doi.org/10.1002/mrc.1260300213
Strona internetowa wydawcy
Podobne publikacje
Platelet-activating, factor changes in phospholipid extracts from the plasma, peripheral blood mononuclear cells and bone marrow mononuclear cells of patients with acute leukemia - A31P MRS in vitro study.
Kuliszkiewicz-Janus M., Tuz M. A., Kiełbiński M., Baczyński Stanisław, Jaźwiec B., Śladowska Helena