Abstract
AbstractA mononuclear lanthanide–radical complex [Tb(hfac)3(NITPhSCH3)2] (1) and a one‐dimensional chain complex [Tb(hfac)3(NITPhSCH3)]n (2) {hfac = hexafluoroacetylacetonate, NITPhSCH3 = 2‐[4‐(methylthio)phenyl]‐4,4,5,5‐tetramethylimidazolin‐1‐oxyl 3‐oxide} have been synthesized. Single‐crystal X‐ray diffraction studies revealed that compound 1 is a mononuclear complex in which two NITPhSCH3 radicals are coordinated as monodentate ligands to the TbIII ion through their NO groups to form a tri‐spin complex, and complex 2 is a 1D chain structure constructed of Tb(hfac)3 units bridged by NITPhSCH3 radicals through their NO groups. The temperature dependence of the magnetic susceptibilities of 1 and 2 indicates ferromagnetic coupling between the TbIII ion and the NITPhSCH3 radical. Frequency‐dependent out‐of‐phase signals of alternating current magnetic susceptibilities were observed at low temperature for both complexes, indicative of slow magnetic relaxation.
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