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The synthesis, structure, and reactivity of stable homoleptic heterometallic LnL4K2 complexes of divalent lanthanide ions with electron‐rich tris(tert‐butoxy)siloxide ligands are reported. The [Ln(OSi(OtBu)3)4K2] complexes (Ln=Eu, Yb) are stable at room temperature, but they promote the reduction of azobenzene to yield the KPhNNPh radical anion as well as the reductive cleavage of CS2 to yield CS3...
Siloxide unterstützen die Reduktion kleiner Moleküle durch Uran‐Komplexe. Die Behandlung von [U{N(SiMe3)2}3] mit HOSi(OtBu)3 (3 Äquiv.) liefert den neuartigen homoleptischen Uran(III)‐Siloxid‐Komplex 1, der als Zwei‐Elektronen‐Reduktionsmittel für CS2 und CO2 (siehe Schema) wirkt. Komplex 1 reduziert außerdem Toluol und bildet einen invertierten Diuran‐Sandwichkomplex.
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