Syntheses of the Antimonides R2Sb− (R = Ph,Mes, tBu,tBu2Sb) and Sb73− by Reactions of Organoantimony Hydrides or cyclo‐(tBuSb)4 with Li,Na, K,or BuLi |
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Authors: | H. J. Breunig M. E. Ghesner E. Lork |
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Abstract: | Reactions of R2SbH with BuLi at ?70 °C in tetrahydrofuran (thf) lead to [R2SbLi(thf)3] [R = Ph ( 1 ) or R = Mes ( 2 )]. The antimonides [tBu2SbK(pmdeta)] ( 3 ) (pmdeta = pentamethyldiethylenetriamine), [Li(tmeda)2][tBu4Sb3]·benzene ( 4 ) (tmeda = tetramethylethylenediamine), and [tBu4Sb3Na(tmeda, thf)] ( 5 ) result from the reduction of cyclo‐(tBuSb)4 by Li, Na, or K with pmdeta or tmeda in thf. The primary stibanes RSbH2 [R = Mes ( 6 ), 2‐(Me2NCH2)C6H2 ( 7 )] are synthesized by reactions of RSbCl2 with LiAlH4. PhSbH2 reacts with BuLi, and tmeda in toluene to give [Sb7Li3(tmeda)3]·toluene ( 8 ). [Sb7Na3(pmdeta)3]·toluene ( 9 ) is obtained from PhSbH2, Na in liqu. NH3, pmdeta and toluene. Crystal structures are reported for 1 – 5 and 9 . |
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Keywords: | Antimony Alkali metals Hydrides |
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