Lanthanide Triangles Supported by Radical Bridging Ligands

The first examples of metalla­cycles containing rare earth ions bridged by radicals are reported. The molecular triangles [Ln3­(hfac)6­(bptz•–)3] (Ln = DyIII, YIII; hfac = 1,1,1,5,5,5-hexa­fluoro-2,4-pentane­dionate; bptz = 3,6-bis­(2-pyridyl)-1,2,4,5-tetrazine) consist of lanthanide ions bridged by...

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Published in:Journal of the American Chemical Society 2018-01, Vol.140 (3), p.908-911
Main Authors: Dolinar, Brian S, Alexandropoulos, Dimitris I, Vignesh, Kuduva R, James, Tia’Asia, Dunbar, Kim R
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cited_by cdi_FETCH-LOGICAL-a390t-168e24fcd4caebcfb74586a5da8d645749ebdecf07ce4789d837caa3fe9c3113
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description The first examples of metalla­cycles containing rare earth ions bridged by radicals are reported. The molecular triangles [Ln3­(hfac)6­(bptz•–)3] (Ln = DyIII, YIII; hfac = 1,1,1,5,5,5-hexa­fluoro-2,4-pentane­dionate; bptz = 3,6-bis­(2-pyridyl)-1,2,4,5-tetrazine) consist of lanthanide ions bridged by bptz radical anion (bptz•–) ligands. Magnetic susceptibility measurements and CASSCF calculations performed on [Dy3(hfac)6(bptz•–)3] reveal the presence of anti­ferro­magnetic coupling between the DyIII centers and the bptz•– ligands, with J = −6.62 cm–1.
doi_str_mv 10.1021/jacs.7b12495
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title Lanthanide Triangles Supported by Radical Bridging Ligands
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