Ferro- and Ferrimagnetic Chains of hin-Bridged Copper(II) and Manganese(II) and hnn-Bridged Manganese(II) Complexes (hin = 4,4,5,5Tetramethylimidazolin-1-oxyl; hnn = 4,4,5,5-Tetramethylimidazolin-1-oxyl 3-Oxide)

We have exploited potential utility of 4,4,5,5-tetramethylimidazolin-1-oxyl (hin) and 4,4,5,5-tetramethylimidazolin-1-oxyl 3-oxide (hnn) as (mu)-1,4 and (mu)-1,5 bridging ligands, respectively, carrying an unpaired electron in development of metal-radical hybrid magnets. X-ray diffraction measurements of [Cu(hfac)2hin] (1), [Mn(hfac)2hin] (2), and [Mn(hfac)2hnn] (3) revealed one-dimensional metal-radical alternating chain structures, where hfac denotes 1,1,1,5,5,5-hexafluoropentane-2,4-dionate. Magnetic measurements of 1 indicate the presence of intrachain ferromagnetic coupling between copper and radical spins.