Construction and Magnetic Study of One‐Dimensional Lanthanide–Radical Chains Involving Pyridinone‐Substituted Nitronyl Nitroxide Radicals

Abstract

A new nitronyl nitroxide radical-containing pyridinone group (NIT-PhPyO, 1) has been synthesized {NIT-PhPyO = 2-[4-(4-pyridinone)phenyl]-4,4,5,5-tetramethylimidazoline-1oxyl-3-oxide}. By using this functionlized nitronyl nitroxide, two isomorphic lanthanide-nitronyl nitroxide radical compounds [{Ln(hfac) 3 } 3 (NIT-PhPyO) 2 ] n (Ln = Gd 2 and Dy 3; hfac = hexafluoroacetylacetonate) have been successfully obtained. X-ray spectroscopic analysis reveals that complexes 2 and 3 possess [a] Supporting Information (see footnote on the first page of this article): Selected bond lengths and angles for 1-3, SHAPE analysis for 3, molecular structure of complex 3, the coordination polyhedron of all Dy III ions in 3, the 1D chain of 3, packing of the chains for complex 3, and the additional magnetic data for 3.