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• W4327747423 abstract "Treatment of an excess of ytterbium metal with dpp-Bian {dpp-Bian = 1,2-bis[(2,6-diisopropylphenyl)imino]acenaphthene} in the presence of 0.5 equiv of iodine resulted in a mixture of [(dpp-Bian)2–Yb2+(DME)2] (1) along with [YbI2(DME)2]2 and an over-reduced byproduct [(dpp-Bian)3–Yb2+I(DME)Yb2+(DME)2] (2). Oxidation of 1 with iodine is accompanied by electron transfer from the ligand to the metal atom to give [(dpp-Bian)−Yb2+I(THF)2]2 (3). Azide complexes [(dpp-Bian)2–Yb3+N3(DME)]6 (4) and [(dpp-Bian)2–Yb3+N3(THF)2]2 (5) were obtained by either oxidation of 1 with TMSN3 or salt metathesis reaction of 3 with NaN3. Fluorine complexes [(dpp-Bian)2–Yb3+F(DME)]2 (7) and [(dpp-Bian)2–Yb3+F(THF)1.5]2 (8) were obtained by oxidation of 1 with F2C═CF2. Complex 3 in solution revealed reversible thermally induced intramolecular electron transfer {[(dpp-Bian)−Yb2–] ⇄ [(dpp-Bian)2–Yb3+]}. Unstable solutions of [(dpp-Bian)Dy(DME)2] (11) and [(dpp-Bian)Tm(DME)2] (12) were obtained by salt metathesis reaction of [(dpp-Bian)K2] with DyI2 or TmI2. These solutions treated with TMSN3 result in [(dpp-Bian)Dy(N)3(DME)]6 (13) and [(dpp-Bian)Tm(N)3(DME)]6 (14). The crystalline structure of azide and fluorine compounds depended on the crystallization solvent. New compounds are characterized by nuclear magnetic resonance, infrared spectroscopy, magnetic moment and differential scanning calorimetry measurements, and elemental and X-ray diffraction analysis. Solution transitions were probed by absorption spectroscopy." @default.
• W4327747423 created "2023-03-18" @default.
• W4327747423 creator A5005715378 @default.
• W4327747423 creator A5007338694 @default.
• W4327747423 creator A5012477895 @default.
• W4327747423 creator A5013954890 @default.
• W4327747423 creator A5016298475 @default.
• W4327747423 creator A5052785880 @default.
• W4327747423 creator A5053859547 @default.
• W4327747423 creator A5056145637 @default.
• W4327747423 date "2023-03-17" @default.
• W4327747423 modified "2023-09-24" @default.
• W4327747423 title "Stability and Solution Behavior of [(dpp-Bian)Ln] and [(dpp-Bian)LnX] (Ln = Yb, Tm, or Dy; X = I, F, or N₃)" @default.
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