Lanthanide Triangles Supported by Radical Bridging Ligands

Brian S Dolinar; Dimitris I Alexandropoulos; Kuduva R Vignesh; Tia'Asia James; Kim R Dunbar

doi:10.1021/jacs.7b12495

Lanthanide Triangles Supported by Radical Bridging Ligands

J Am Chem Soc. 2018 Jan 24;140(3):908-911. doi: 10.1021/jacs.7b12495. Epub 2018 Jan 9.

Authors

Brian S Dolinar¹, Dimitris I Alexandropoulos¹, Kuduva R Vignesh¹, Tia'Asia James¹, Kim R Dunbar¹

Affiliation

¹ Department of Chemistry, Texas A&M University , College Station, Texas 77842-3012, United States.

PMID: 29257883
DOI: 10.1021/jacs.7b12495

Abstract

The first examples of metallacycles containing rare earth ions bridged by radicals are reported. The molecular triangles [Ln₃(hfac)₆(bptz^•-)₃] (Ln = Dy^III, Y^III; 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 Dy^III centers and the bptz^•- ligands, with J = -6.62 cm^-1.

Publication types

Research Support, Non-U.S. Gov't
Research Support, U.S. Gov't, Non-P.H.S.