We report on the highly compact nitroxide-substituted nitronylnitroxide 1 and iminonitroxide 2; they have isoelectronic structures with trimethylenemethane. These diradicals are stable under aerated conditions at room temperature and have large positive exchange interactions: J/k(B) = +390 K (H = -2JS(1)(/)(2)·S(1/2)) for 1 and J/k(B) ≈ +550 K for 2.
Preparation and Magnetic Properties of Metal-Complexes from <i>N</i>-<i>t</i>-Butyl-<i>N</i>-oxidanyl-2-amino-(nitronyl nitroxide)
作者:Takanori Furui、Shuichi Suzuki、Masatoshi Kozaki、Daisuke Shiomi、Kazunobu Sato、Takeji Takui、Keiji Okada、Evgeny V. Tretyakov、Svyatoslav E. Tolstikov、Galina V. Romanenko、Victor I. Ovcharenko
DOI:10.1021/ic4020898
日期:2014.1.21
N-t-butyl-N-oxidanyl-2-amino(nitronylnitroxide) diradical (1) with M(hfac)2 (M: Mn or Cu) were investigated. These reactions were found to be very sensitive to the type of metal ion employed. Complex [Mn(hfac)2·1], consisting of Mn(hfac)2 and diradical 1, was readily prepared by mixing the components. However, the reaction of Cu(hfac)2 with 1 or N-t-butyl-N-oxidanyl-2-amino(iminonitroxide) diradical (2) involved