Structures and energies of cyclo-C5H5SF and cyclo-C5H5SF3 have been calculated. In both cases the 2- and 4-CF-isomers are more stable than the SF and SF3 isomers. The fluxional behavior of the sulfur bonded fluorides has been calculated also. In cyclo-C5H5SF an ellipsoidal rotation of the sulfur bonded fluorine atom is observed with a barrier of a few kcal mol−1. In sulfur bonded cyclo-C5H5SF3 the
已经计算出环-C 5 H 5 SF和环-C 5 H 5 SF 3的结构和能量。在这两种情况下,2-和4-CF异构体均比SF和SF 3异构体稳定。还计算了
硫键
氟化物的通量行为。在环C 5 H 5 SF中,观察到
硫键合的
氟原子的椭圆形旋转,其势垒为几kcal mol -1。与以前的工作一致,在
硫键合的环-C 5 H 5 SF 3中,预计(旋转)旋转会发生而没有明显的障碍。