作者:Alireza Fattahi、Lev Lis、Zahra A. Tehrani、Sudha S. Marimanikkuppam、Steven R. Kass
DOI:10.1021/jo202519w
日期:2012.2.17
bicyclo[2.2.1]heptane, bicyclo[2.2.2]octane, and adamantane, respectively, were determined in the gas phase by making use of a thermodynamic cycle (i.e., BDE(R–H) = ΔH°acid(H–X) – IE(H·) + EA(X·)). These results are in good accord with high-level G3 theory calculations, and the experimental values along with G3 predictions for bicyclo[1.1.1]pentane, bicyclo[2.1.1]hexane, bicyclo[3.1.1]heptane, and bicyclo[4
测定了双环[2.2.1]庚烷,双环[2.2.2]辛烷和金刚烷的桥头CH键氢解离焓分别为105.7±2.0、102.9±1.7和102.4±1.9 kcal mol –1。利用热力学循环(例如BDE(R–H)= ΔH °酸(H–X)– IE(H ·)+ EA(X ·))形成气相。这些结果与高级G3理论计算以及双环[1.1.1]戊烷,双环[2.1.1]己烷,双环[3.1.1]庚烷和双环[ [4.2.1]壬烷被发现与环系统的柔性相关。还提供了气相中烷基阴离子的稀有实例。