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beta-Phosphorus hyperfine coupling constant in nitroxides: 5. Solvent effect

Gérard Audran 1 Lionel Bosco 1 Paul Brémond 1 Teddy Butscher 1 Jean-Michel Franconi 2 Kuanysh Kabitaev Marque S.R.A. 1 Philippe Mellet 2 Elodie Parzy 2 Maurice Santelli 1 Eric Thiaudiere 2 Viel Stéphane 1
1 ICR - Institut de Chimie Radicalaire
2 CRMSB - Centre de résonance magnétique des systèmes biologiques
Abstract : Recently, we published the titration of water in organic solvents and conversely using this family of nitroxides (Org. Biomol. Chem. 2015 ASAP). In this article, we show that the a(beta,P) of persistent cyclic beta-phosphorylated nitroxides decreases with the normalized polarity Reichardt's constant E-T(N). Koppel-Palm and Kalmet-Abboud-Taft relationships were applied to get a deeper insight into the effects influencing a(N) and a(beta,P): polarity/polarizability, hydrogen bond donor property, and structuredness of the cybotactic region.
Keywords : AMINOXYL RADICALS RING NITROXIDES BOND HOMOLYSIS POLARITY EPR ESR RESONANCE NITROGEN PROBES MRI
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Submitted on : Saturday, December 3, 2016 - 4:49:17 PM
Last modification on : Monday, April 25, 2022 - 1:50:14 PM

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Gérard Audran, Lionel Bosco, Paul Brémond, Teddy Butscher, Jean-Michel Franconi, et al.. beta-Phosphorus hyperfine coupling constant in nitroxides: 5. Solvent effect. RSC Advances, Royal Society of Chemistry, 2016, 6 (7), pp.5653-5670. ⟨10.1039/c5ra23521a⟩. ⟨hal-01408220⟩

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