Control of spin–spin exchange interactions in polynitroxides through inclusion within γ-cyclodextrin†
Abstract
Supramolecular interactions of polynitroxides with γ-cyclodextrin (γ-CD) were used to control intramolecular electron spin–spin exchange couplings in these stable radicals. In the absence of γ-CD, the binitroxide T2 and trinitroxide T3 showed strong spin–spin coupling as evidenced by the high exchange coupling constant of J = 120 MHz for T2 in its