The importance of the counter-cation in reductive rare-earth metal chemistry: 18-crown-6 instead of 2,2,2-cryptand allows isolation of [YII(NR2)3]1- and ynediolate and enediolate complexes from CO reactions.

Chem Sci · 2020 · PMC8150099 · PMID 34123296

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showed a trendno p-value reported

3,4 Stability The [K(crypt)] 1+ complexes, [K(crypt)][Ln(NR 2 ) 3 ], 1-Ln , showed a trend in solution stability of Tm ∼ Gd ≫ Tb > Dy ≫ Ho, Er ≫ Nd. 19 The 2-Ln complexes have similar stability to those of 1-Ln and display a similar trend.

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The importance of the counter-cation in reductive rare-earth metal chemistry: 18-crown-6 instead of 2,2,2-cryptand allows isolation of [Y<sup>II</sup>(NR<sub>2</sub>)<sub>3</sub>]<sup>1-</sup> and ynediolate and enediolate complexes from CO reactions.

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