Synthesis and structural characterisation of metallated aminomethylanilines

• Verfasst von: Galka, Christian [VerfasserIn]
• Verfasst von: Gade, Lutz H. [VerfasserIn]
• Titel: Synthesis and structural characterisation of metallated aminomethylanilines
• Titelzusatz: dedicated to Helmut Werner, a mentor and friend, on the occasion of his 70th birthday
• Gefeierte Person: Werner, Helmut [GefeierteR]
• Verf.angabe: Christian H. Galka, Lutz H. Gade
• Jahr: 2004
• Umfang: 8 S.
• Fussnoten: Available online 31 January 2004 ; Gesehen am 08.12.2022
• Titel Quelle: Enthalten in: Inorganica chimica acta
• Ort Quelle: New York, NY [u.a.] : Elsevier, 1967
• Jahr Quelle: 2004
• Band/Heft Quelle: 357(2004), 6, Seite 1725-1732
• ISSN Quelle: 0020-1693
• DOI: doi:10.1016/j.ica.2003.12.029
• Datenträger: Online-Ressource
• Dokumenttyp: Festschrift
• Sprache: eng
• K10plus-PPN: 1826618848

Abstract

Reaction of [1-{Me3SiNH}-2-{Me3SiNHCH2}]C6H4 (1) and [1-{tBuMe2SiNH}-2-{tBuMe2SiNHCH2}]C6H4 (2) in tetrahydrofuran with two equivalents of n-butyllithium gave the lithium amides [1-{Me3SiN(Li)}-2-{Me3SiN(Li)CH2}]C6H4(thf)3 (3) and [1-{tBuMe2SiN(Li)}-2-{tBuMe2SiN(Li)CH2}]C6H4(thf)2 (4). The molecular structures of both 3 and 4, which were established by X-ray diffraction studies, differ in the number of thf molecules coordinated to the Li centres. Depending on the size of the amidomethyl-bonded silyl groups two (4) or three thf-coligands (3) were found to bind to the lithium centres rendering them tri- or tetracoordinate, respectively. In the Me3Si-substituted derivative 3 a rare example of a thf molecule as a bridging ligand was found which appears to pertain as such in solution. The reaction of the lithium amides 3 and 4 with two molar equivalents of TlCl in n-pentane gave the thallium(I) amides [1-{Me3SiN(Tl)}-2-{Me3SiN(Tl)CH2}]C6H4 (5) and [1-{tBuMe2SiN(Tl)}-2-{tBuMe2SiN(Tl)CH2}]C6H4 (6) which are stable in hydrocarbon solutions but rapidly decompose in polar solvents.