Gallium trichloride (GaCl) was used as a solvent for the oxidative dissolution of the lanthanide (Ln) metals cerium (Ce) and holmium (Ho). Reactions were performed at temperatures above 100 °C in sealed vessels to maintain the liquid phase for GaCl during the oxidizing reactions. The best results were obtained from reactions using 8 equiv of GaCl to metal where the inorganic complexes [Ga][Ln(GaCl)] [Ln = Ce (), Ho ()] could be isolated. Recrystallization of and employing fluorobenzene (CHF) produced [Ga(η-CHF)][Ln(GaCl)] [Ln = Ce (), Ho ()] where reversible η coordination of CHF to [Ga] was observed. All complexes were characterized through elemental analysis (F and Cl), IR and UV-vis-near-IR spectroscopies, and both solution and solid-state NMR techniques.
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| http://dx.doi.org/10.1021/acs.inorgchem.3c02774 | DOI Listing |
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