Synthesis of Cationic Organolanthanide Complexes

All manipulations were performed under inert conditions using either standard Schlenk techniques or argon-filled glovebox. ⁿHexane, toluene and THF were purified by refluxing over potassium using benzophenone as an indicator and distilled prior to use. The chemicals pentamethylcyclopentadiene (Cp*H), allylmagnesium chloride (2.0 M in THF), potassium bistrimethylsilylamide (KN(Si(CH₃)₃)₂) anhydrous LnCl₃ (Ln = Gd, Tb, Dy), Celite, and 2.2.2-cryptand (crypt-222) were purchased from Sigma Aldrich. Crypt-222 was recrystallized from ⁿhexane prior to use. KCp*,^{30 (link)} (HNEt₃)(BPh₄),^{31 (link)} Cp*₂Ln(BPh₄),^{26 (link)} H₂Bbim,^{32 (link)} KC₈ (ref. 33 (link)) and K₂Bbim^{29 (link)} were synthesized according to literature procedures.

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Benner F., La Droitte L., Cador O., Le Guennic B, & Demir S. (2023). Magnetic hysteresis and large coercivity in bisbenzimidazole radical-bridged dilanthanide complexes. Chemical Science, 14(21), 5577-5592.

Publication 2023

2.2.2-cryptand (crypt-222)

Argon Benzophenone Celite Chloride Crypt Cryptand Potassium Toluene

Corresponding Organization :

Other organizations : Michigan State University, Université de Rennes, Centre National de la Recherche Scientifique, Institut des Sciences Chimiques de Rennes

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Variable analysis

independent variables

Solvent purification method: Refluxing over potassium using benzophenone as an indicator and distilling prior to use
Chemicals used: pentamethylcyclopentadiene (Cp*H), allylmagnesium chloride (2.0 M in THF), potassium bistrimethylsilylamide (KN(Si(CH3)3)2), anhydrous LnCl3 (Ln = Gd, Tb, Dy), Celite, and 2.2.2-cryptand (crypt-222)

dependent variables

Not explicitly mentioned

control variables

Inert conditions using either standard Schlenk techniques or argon-filled glovebox
Crypt-222 was recrystallized from n-hexane prior to use
KCp*, (HNEt3)(BPh4), Cp*2Ln(BPh4), H2Bbim, KC8, and K2Bbim were synthesized according to literature procedures

positive controls

None specified

negative controls

None specified

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