Tuning of the nitronyl nitroxide radical magnetic and electronic properties by inclusion in cucurbit[n]urils |
| |
| Authors: | Kira E Vostrikova Eugenia V PeresypkinaValeri A Drebushchak Vladimir A Nadolinny |
| |
| Institution: | a Nikolaev Institute of Inorganic Chemistry SB RAS, 3 Lavrentiev Avenue, Novosibirsk 630090, Russia
b Novosibirsk State University, 2 Pirogova Street, Novosibirsk 630090, Russia |
| |
| Abstract: | A nitronyl nitroxide, 2-(benzimidazolyl)-4,4,5,5,-tetramethylimidazolidinyl-3-oxide-1-oxy, 1 and its imino nitroxide analog 2, have been included in cucurbitn]urils, CBn (n = 7,8), as their hydrochlorides and neutral compounds as well. The hydrochlorides form soluble 1:1 complexes. In the solid state the paramagnetic centers are well isolated and magnetic interactions are cancelled out in contrast to what is observed for the pure nitroxides. The two inclusion complexes involving 1 were characterized by X-ray crystallography. When they were heated in the solid state, one observed a clean conversion of the nitronyl nitroxide guest, 1, into its analog 2. |
| |
| Keywords: | Free radicals Nitroxide Cucurbit[n]uril Inclusion compounds |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
