Trimesitylstibane (1) reacts with SbCl3 or SbBr3 to form the halostibanes Mes2SbCl (2), MesSbCl3 (3), Mes2SbBr (4). or MesSbBr2 (5) [Mes = 2,4,6-(CH3)3C6H2]. Action of MesMgCl on an excess of SbCl3 or SbBr3 at low temperatures gives Mes3SbCl2 (6) or Mes3SbBr2 (7), resp. Addition of Br2 to 1 gives 7 in 96% yield. The silylstibanes Mes2SbSiMe3 (8) and McsSb(SiMc3)2 (9) are formed by dehalogenation of Me3SiCl and 4 or 5 by Mg filings in tetrahydrofuran. Mes2SbOSiMe3 (10) is obtained by air oxidation of 8. Reduction of 4 with Mg gives Mes2SbSbMes2 (19). Crystals of the composition (MesSb)6·C6H6 (13a) or (MesSb)4·C6H5CH3 (13b) are obtained from Mg and 5 after work-up in benzene or toluene, resp.
Die Halostibane (V)‐(VIII) lassen sich ausgehend von der Reaktion zwischen Antimontrichlorid (I) und Mesitylbromid (II) durch gezielte Wahl der Molverhältnisse synthetisieren.
Emthalogenierung des Organodichlorstibans (I) mit Magnesium (II) in Tetrahydrofuran führt zu dem Cyclotristiban (IIIa) und dem Cyclotetrastiban (IIIb).
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