Synthesis, Structure, and Bonding Properties of 5-Carbaphosphatranes: A New Class of Main Group Atrane
作者:Junji Kobayashi、Kei Goto、Takayuki Kawashima、Michael W. Schmidt、Shigeru Nagase
DOI:10.1021/ja011458j
日期:2002.4.1
phosphorane in the perfectly "anti-apicophilic" arrangement. Apical P-C and P-H bond lengths were 1.921(2) and 1.38(2) A, respectively. The (1)J(PH) value of 1 and the (1)J(PC)(P-CH(3)) value of 2 were 852 and 215 Hz, respectively, which are extraordinarily large for the apical coupling constants of phosphoranes, but close to those of the reported phosphatranes with a 5-nitrogen atom. IR and Raman spectra
1-Hydro-5-carbaphosphatrane (1) 和 1-methyl-5-carbaphosphatrane (2) 是 phosphatranes 的第一个 5-碳类似物,是通过环次膦酸盐 3 的去甲基化反应合成的。 X 射线分析显示 1 具有一个典型的三角双锥结构,在顶端位置有氢和碳原子,在赤道位置有三个氧原子,表明 1 是完美“反亲亲亲油性”排列的正膦。顶端 PC 和 PH 键长分别为 1.921(2) 和 1.38(2) A。(1)J(PH)值为1,(1)J(PC)(P-CH(3))值为2,分别为852Hz和215Hz,这对于正膦的顶端耦合常数来说是非常大的,但接近于报道的具有 5 个氮原子的磷酯。还报告了 IR 和拉曼光谱。