Distibanes and Distibenes from Reduction of Sb(NON
<sup>R</sup>
)Cl by using Mg
<sup>I</sup>
Reagents
作者:Ryan J. Schwamm、Martyn P. Coles
DOI:10.1002/chem.201903175
日期:2019.11.7
antimony chlorides Sb(NONR )Cl (NONR =[O(SiMe2 NR)2 ]2- ; R=tBu, Ph, 2,6-Me2 C6 H3 =Dmp, 2,6-iPr2 C6 H3 =Dipp, 2,6-(CHPh2 )2 -4-tBuC6 H2 =tBu-Bhp) are reduced to SbII and SbI species by using MgI reagents, [Mg(BDIR' )]2 (BDI=[HCC(Me)NR'}2 ]- ; R'=2,4,6-Me3 C6 H2 =Mes, Dipp). Stoichiometric reactions with Sb(NONR )Cl (R=tBu, Ph) form dimeric SbII stibanes [Sb(NONR )]2 , shown crystallographically to contain
双(酰氨基二甲基)二硅氧烷锑氯化物Sb(NONR)Cl(NONR = [O(SiMe2 NR)2] 2-; R = tBu,Ph,2,6-Me2 C6 H3 = Dmp,2,6-iPr2 C6 H3 = Dipp,2,6-(CHPh2)2 -4-tBuC6 H2 = tBu-Bhp)通过使用MgI试剂[Mg(BDIR']] 2(BDI = [HC C(Me )NR'} 2]-; R'= 2,4,6-Me3 C6 H2 = Mes,Dipp)。与Sb(NONR)Cl(R = tBu,Ph)的化学计量反应形成二聚SbII stibanes [Sb(NONR)] 2,在晶体学上显示为包含Sb-Sb单键。具有R = Dmp取代基的类似二乙烷具有极长的Sb-Sb相互作用,并显示出与溶液中的自由基特征一致的光谱和反应性。当R = Dipp时,用MgI试剂还原直接得到二苯甲酸酯[Sb(μ-NONDipp)Mg(BDIR′)(THF)n]