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)] |
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| Authors: | Herbert Schumann Jrn Winterfeld Esther C E Rosenthal Holger Hemling Lothar Esser |
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| Institution: | Herbert Schumann,Jörn Winterfeld,Esther C. E. Rosenthal,Holger Hemling,Lothar Esser |
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| Abstract: | 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. |
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| Keywords: | Lanthanide(III)amides (Trimethylsilylamido)lanthanide(III) complexes X-ray structures |
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