Hypervalent organoantimony(III) compounds of the type [2-(Me2NCH2)C6H4]PhSbCl (1), [2-(Me2NCH2)C6H4]MesSbBr (7) and [2-(Me2NCH2)C6H4]nAr3ânSb [n = 1, Ar = Ph (4), Mes (9); n = 2, Ar = Ph (5), Mes (10)] were prepared via salt elimination reactions between [2-(Me2NCH2)C6H4]Li and MesMgBr and PhnSbCl3ân, [2-(Me2NCH2)C6H4]SbBr2 or [2-(Me2NCH2)C6H4]nSbCl3ân (n = 1, 2), in appropriate molar ratios. Halogen exchange reactions with aqueous KBr or KI gave [2-(Me2NCH2)C6H4]ArSbX [Ar = Ph, X = Br (2), I (3); Ar = Mes, X = I (8)]. Metathesis reaction between 1 and MesMgBr affords [2-(Me2NCH2)C6H4]PhMesSb (6). Compounds 1â10 were investigated by means of NMR (1H, 13C) in solution and by mass spectrometry. The investigation of the molecular structures of 2â8 by single-crystal X-ray diffraction revealed that the nitrogen atoms of the pendant CH2NMe2 arms are strongly coordinated to the antimony atoms. All compounds exhibit chirality and crystallize as racemic mixtures.
类型为[2-(Me2NCH2)C6H4]PhSbCl (1)、[2-(Me2NCH2)C6H4]MesSbBr (7)和[2-(Me2NCH2)C6H4]nAr3−nSb [n = 1, Ar = Ph (4), Mes (9); n = 2, Ar = Ph (5), Mes (10)]的高价有机
锑(III)化合物通过[2-(Me2NCH2)C6H4]Li与MesMgBr和PhnSbCl3−n、[2-(Me2NCH2)C6H4]SbBr2或[2-(Me2NCH2)C6H4]nSbCl3−n (n = 1, 2)之间的盐消除反应制备而成,反应中使用了适当的摩尔比。与
水相KBr或KI的卤素交换反应产生了[2-(Me2NCH2)C6H4]ArSbX [Ar = Ph, X = Br (2), I (3); Ar = Mes, X = I (8)]。化合物1与MesMgBr之间的置换反应生成了[2-(Me2NCH2)C6H4]PhMesSb (6)。化合物1–10通过NMR(1H, 13C)在溶液中和质谱法进行了研究。对化合物2–8的分子结构进行了单晶X射线衍射研究,结果显示,悬挂的CH2NMe2臂的氮原子与
锑原子有强的配位作用。所有化合物均表现出手性,并以外消旋混合物的形式结晶。