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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Mills, David
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (8/8 displayed)
- 2024Tris-Silanide f-Block Complexes:Insights into Paramagnetic Influence on NMR Chemical Shifts
- 2024Isolation and electronic structures of lanthanide(II) bis(trimethylsilyl)phosphide complexescitations
- 2023Synthesis and Characterization of Yttrium Methanediide Silanide Complexescitations
- 2023Comparison of group 4 and thorium M(IV) substituted cyclopentadienyl silanide complexescitations
- 2023Comparison of group 4 and thorium M(IV) substituted cyclopentadienyl silanide complexescitations
- 2022Synthesis of heteroleptic yttrium and dysprosium 1,2,4-tris(trimethylsilyl)cyclopentadienyl complexescitations
- 2021Single Molecule Magnetscitations
- 2018Structural Characterization of Lithium and Sodium Bulky Bis(silyl)amide Complexescitations
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article
Synthesis of heteroleptic yttrium and dysprosium 1,2,4-tris(trimethylsilyl)cyclopentadienyl complexes
Abstract
We report the synthesis of heteroleptic dysprosium complexes of the 1,2,4-tris(trimethylsilyl)cyclopentadienyl ligand (Cp′′′ = {C5H2(SiMe3)3-1,2,4}), and diamagnetic yttrium analogues, by salt metathesis protocols from KCp′′′ and molecular lanthanoid halide or borohydride precursors: [{Ln(Cp′′′)2(μ-Cl)2K}2]∞ (1-Ln; Ln = Y, Dy), [Ln(Cp′′′)2(THF)(Cl)] (2-Ln; Ln = Y, Dy), [Y(Cp′′′)2(η3-C3H5)] (3-Y), [Y(Cp′′′)(BH4)2(THF)] (4-Y), [Dy(Cp′′′)(BH4)(μ-BH4)]4 (5-Dy) and [Ln(Cp′′′)2(BH4)] (6-Ln; Ln = Y, Dy); several crystals of [Dy(Cp′′′)2(BH4)(THF)] (7-Dy) formed on one occasion during the isolation of 6-Dy. Efforts to prepare the isolated lanthanoid metallocenium cations [Ln(Cp′′′)2]+ for Y and Dy were not successful by the anion abstraction methods investigated herein; however, several crystals of the contact ion-pair complex [Y(Cp′′′)2{(μ-Ph)2BPh2}] (8-Y) formed from the reaction of 3-Y with [NEt3H][BPh4]. On one occasion during the preparation of 3-Y we isolated several crystals of [Mg(Cpʹʹʹ)(THF)(μ-Cl)]2. Complexes 1-6 and [NEt3H][BPh4] were all structurally authenticated by single crystal XRD and were characterised by IR spectroscopy and elemental analysis, with magnetic susceptibility for dysprosium complexes determined by the Evans method, and yttrium analogues studied by multinuclear NMR spectroscopy; complexes 7-Dy, 8-Y, and [Mg(Cpʹʹʹ)(THF)(μ-Cl)]2 were characterised by single crystal XRD only. The magnetic properties of 5-Dy were probed by SQUID magnetometry and ab initio calculations.