7029-27-8Relevant academic research and scientific papers
Synthesis of Mesitylstibanes
Ates, M.,Breunig, H. J.,Soltani-Neshan, A.,Tegeler, M.
, p. 321 - 326 (2007/10/02)
Trimesitylstibane (1) reacts with SbCl3 or SbBr3 to form the halostibanes Mes2SbCl (2), MesSbCl2 (3), Mes2SbBr (4), or MesSbBr2 (5) .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 96percent yield.The silylstibanes Mes2SbSiMe3 (8) and MesSb(SiMe3)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 composi tion (MesSb)6*C6H6 (13a) or (MesSb)4*C6H5CH3 (13b) are obtained from Mg and 5 after work-up in benzene or toluene, resp. - Keywords: Trimesitylstibane, Halomesitylstibanes, Trimesitylantimonydihalides, Tetramesityldistibane, Hexamesityl-cyclo-hexastibane, Mesityl(trimethylsilyl)stibanes
Reduction of Butyl- and Phenylantimony(III) Bromides and of t-Butylantimony(III) Chlorides with Magnesium in the Presence of Trimethylchlorosilane: Competition of Sb-Sb and Sb-Si Coupling
Breunig, Hans Joachim,Severengiz, Tevfik
, p. 395 - 400 (2007/10/02)
Butylantimony(III) bromides react with Mg in tetrahydrofuran (THF) even in presence of Me3SiCl exclusively with Sb-Sb-coupling: Starting from Bu2SbBr, Bu2SbSbBu2 is formed and BuSbBr2 is reduced to (BuSb)x.Sb-Si-coupling dominates in the reactions of Ph2SbBr or t-Bu2SbCl with Mg/Me3SiCl/THF yielding Ph2SbSiMe3 or t-Bu2SbSiMe3.Both Sb-Sb- and Sb-Si-coupling reactions are observed, when PhSbBr2 reacts with Mg and Me3SiCl yielding PhSb(SiMe3)2 and (PhSb)x.The same reactants can also form the distibanes Ph2(SiMe3)2Sb2 and PhSb(SiMe3)3Sb2.The reaction of t-BuSbCl2 with Mg/Me3SiCl yields the stibines t-BuSb(SiMe3)2 and Sb(SiMe3)3 together with (t-BuSb)4.In the reactions of t-BuSbCl2 or PhSbBr2 the ratio of Sb-Sb- and Sb-Si-coupling can be strongly influenced by using different reaction conditions. - Keywords: Diphenyl(trimethylsilyl)stibine, Phenylbis(trimethylsilyl)stibine, Di-tert-butyl(trimethylsilyl)stibine, tert-Butyl-bis(trimethylsilyl)stibine
