Lanthanide Triangles Supported by Radical Bridging Ligands,Journal of the American Chemical Society

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Lanthanide Triangles Supported by Radical Bridging Ligands
Journal of the American Chemical Society ( IF 14.4 ) Pub Date : 2018-01-09 , DOI: 10.1021/jacs.7b12495
Brian S. Dolinar ₁ , Dimitris I. Alexandropoulos ₁ , Kuduva R. Vignesh ₁ , Tia’Asia James ₁ , Kim R. Dunbar ₁

Affiliation

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.

中文翻译：

由自由基桥连配体支持的镧系元素三角形

报道了含有由自由基桥接的稀土离子的金属环的第一个例子。分子三角形 [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) 由 bptz 自由基阴离子 (bptz•-) 配体桥接的镧系元素离子组成。对 [Dy3(hfac)6(bptz•-)3] 进行的磁化率测量和 CASSCF 计算揭示了 DyIII 中心和 bptz•- 配体之间存在反铁磁耦合，J = -6.62 cm-1。

更新日期：2018-01-09

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