(a), SiPh2Me (b), SiCy2Me (c, Cy = cyclohexyl)) eliminate LiF and THF (DME) upon heating to give the corresponding silylidenephosphanes and -arsanes 2 and 4, respectively. The reactivity of the SiE bonds (E = P (2a), As (4a)) toward P4, elemental sulfur, and tellurium is very similar and leads to the corresponding 1,2,3-triphospha-4-silabicyclo[1.1.0]butane (12) and to two isomers of arsadiphosphasilabicyclo[1
单体(
氟甲
硅烷基)
膦酸锂为2 Si(F)P [LiL n ] R(1)(Is = 2,4,6-
三异丙基苯基; L = THF,n = 2,3; R = Si i Pr 3(一个),森达3(b),
硅吨BuMe 2(C ^),SIPH 2我(d),SIPH 3(ë),
硅(
萘)3(˚F),
硅吨卜2 H(克),葛吨卜2 H(ħ,L =
DME,n = 1))和相关的(
氟甲
硅烷基)
砷化锂为2 Si(F)As [Li(THF)2 ] R(3)(R = Si i Pr 3(a),SiPh 2 Me (b),SiCy 2 Me(c,Cy =环己基))加热后消除
LiF和THF(
DME),分别得到相应的亚
甲叉膦和-芳烷2和4。Si E键(E = P(2a),As(4a))对P 4的反应性,元素
硫和
碲非常相似,并导致相应的1,2,3-三
磷-4-
硅双环[1.1.0]丁烷(12)和亚
砷二
磷杂
双环[1.1.0]丁烷的两个异构体,即1-