di-t-butyldiiodosilane with excess lithium naphthalenide followed by treatment with dichloro(2,4,6-tri-t-butylphenyl)phosphane (ArPCl2) leads to the diphosphene ArPPAr, the air-stable compound 1,2-bis(2,4,6-tri-t-butylphenyl)-3,3-di-t-butyl-1,2,3-diphosphasilirane (3), and other products. The X-ray structure analysis of 3 reveals slightly elongated SiP and PP bond lengths of about 224.3 and 223.4 pm,
二叔丁基二
碘硅烷与过量的
萘二
甲酸锂反应,然后用二
氯(2,4,6-三
叔丁基苯基)膦(ArPCl 2)处理,生成对膦稳定的化合物ArPPAr1, 2-双(2,4,6-三
叔丁基苯基)-3,3-二叔丁基-1,2,3-二
磷硅烷基
硅烷(3)等产品。的X射线结构分析3揭示稍微拉长约224.3和223.4微米的SiP和PP键长,分别。三元杂环的空间拥挤导致苯环起皱,并使邻叔丁基基团弯曲出环平面。