Chemistry Letters, Vol.39, No.12, 1331-1332, 2010
Ferromagnetic Gd-Cu, Tb-Cu, and Ho-Cu Couplings in Isomorphous [Ln(2)Cu] Complexes
Exchange couplings in [{Ln(hfac)(3)}(2)Cu(dpk)(2)] (Hdpk stands for di 2-pyridyl ketoxime) were evaluated by high-frequency electron paramagnetic resonance and magnetization studies, showing ferromagnetic Ln-Cu couplings with J(Ln-Cu)/k(B) = +1 271(7), +0 405(3), and +0 196(13) K for Ln Gd Tb, and Ho, respectively