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Updated: May 20, 2025
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Published on: May 12, 2023
Synthesis of Molecular Organo-f-Element-Polyphosphides with Nonclassical Divalent Lanthanide Precursors
David Frick1, Elena Pross1, Ralf Köppe1
1Institute of Inorganic Chemistry, Karlsruhe Institute of Technology (KIT), Kaiserstr. 12, 76131, Karlsruhe, Germany.
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The coordination and functionalization of white phosphorus (P4) by transition metal and main group element compounds have led to a great variety of polyphosphides. However, larger polyphosphides of the rare-earth elements are elusive. In this study, we report the synthesis and full characterization of the largest polyphosphides of the f-elements, [K(18-crown-6)]2[(Cp''2Ln)2(μ4-ƞ2:ƞ2:ƞ2:ƞ2P14)], which was isolated along with [K(18-crown-6)][(Cp''2Ln)2(μ-ƞ3:ƞ3P3)] (Ln = La, Ce, Cp'' = 1,3-bis(trimethylsilyl)cyclopentadienyl). These compounds were obtained by using nonclassical divalent compounds of the early lanthanides for the reduction of white phosphorus.
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