Metallorganische Verbindungen der Lanthanoide. 88. Monomere Lanthanoid(III)‐amide: Synthese und Röntgenstrukturanalyse von [Nd{N(C6H5)(SiMe3)}3(THF)], [Li(THF)2(μ‐Cl)2Nd{N(C6H3Me2‐2,6)(SiMe3)}2(THF)] und [ClNd{N(C6H3‐iso‐Pr2‐2,6)(SiMe3)}2(THF)]

Eine Reihe von Lanthanoid(III)-amiden [Ln{N(C6H5)(SiMe3)}3(THF)x] [Ln = Y (1), La (2), Nd (3), Sm (4), Eu (5), Tb (6), Er (8), Yb (9), Lu (10)] wurde durch Reaktion der entsprechenden Lanthanoidtrichloride, LnCl3, mit LiN(C6H5)(SiMe3) erhalten. Die Umsetzung von NdCl3(THF)2 und LuCl3(THF)3 mit den Lithiumsalzen der sterisch anspruchsvollen Amide [N(C6H3R2-2,6)(SiMe3)]− (R = Me, iso-Pr) fuhrt zur Bildung der Lanthanoiddiamide [Li(THF)2(μ-Cl)2Nd{N(C6H3Me2-2, 6)(SiMe3)}2(THF)] (11) und [ClLn{N(C6H3-iso-Pr2-2,6)(SiMe3)} 2(THF)] [Ln = Nd (12), Lu (13)]. Die neuen Verbindungen wurden durch 1H- und 13C-NMR- und Massenspektren, die Neodymderivate 3, 11 und 12 durch Rontgenstrukturanalysen charakterisiert. Organometallic Compounds of the Lanthanides. 88. Monomeric Lanthanide(III) Amides: Synthesis and X-Ray Crystal Structure of [Nd{N(C6H5)(SiMe3)}3(THF)], [Li(THF)2(μ-Cl)2Nd{N(C6H3Me2-2,6)(SiMe3)}2(THF)], and [ClNd{N(C6H3-iso-Pr2-2,6)(SiMe3)} 2(THF)] A series of lanthanide(III) amides [Ln{N(C6H5) · (SiMe3)}3(THF)x] [Ln = Y (1), La (2), Nd (3), Sm (4), Eu (5), Tb (6), Er (8), Yb (9), Lu (10)] could be prepared by the reaction of lanthanide trichlorides, LnCl3, with LiN(C6H5)(SiMe3). Treatment of NdCl3(THF)2 and LuCl3(THF)3 with the lithium salts of the bulky amides [N(C6H3R2-2,6)(SiMe3)]− (R = Me, iso-Pr) results in the formation of the lanthanide diamides [Li(THF)2(μ-Cl)2Nd{N(C6H3Me2-2, 6)(SiMe3)}2(THF)] (11) and [ClLn{N(C6H3-iso-Pr2-2,6)(SiMe3)} 2(THF)] [Ln = Nd (12), Lu (13)], respectively. The 1H- and 13C-NMR and mass spectra of the new compounds as well as the X-ray crystal structures of the neodymium derivatives 3, 11 and 12 are discussed.