Lanthanide metal amides revisited; the use of the 2,2,6,6-tetramethylpiperidinato (TMP) ligand†
Abstract
Group 3 (Y) and 4f (largely Ce) metal(III) amides (largely 2,2,6,6-tetramethylpiperidinates) have been prepared and structurally characterised: [Y(TMP)3]
(1), [Ce(TMP)3(thf)]
(2), [Li(thf)4][CeBr(TMP)3]
(3), [{Y(TMP)2(μ-OEt)}2]
(4), [{Y(TMP)2}2(μ-OEt)(μ-OBun)]
(5), [{Ce(TMP)2(μ-OEt)}2]
(6) and [LaBr{N(SiMe3)(C6H3Pri2-2,6)}2(thf)]
(10)
[TMP = NC(Me)2(CH2)3C(Me)2]. Low yields of crystalline TeCl(TMP)
(7) and [CeCl2(thf)5][TeCl5(thf)]
(9) were obtained from unsuccessful attempts to oxidise compound 2 by treatment with TeCl4. The compound Br(TMP)
(8), obtained from H(TMP) and
- This article is part of the themed collection: From Molecules to Materials: Materials Discussion 7