Pj. Campos et Ma. Rodriguez, ON THE C2H2I-ENERGY HYPERSURFACE - AN AB-INITIO STUDY( POTENTIAL), Journal of the Chemical Society, Chemical Communications, (2), 1995, pp. 143-144
The study of the C2H2I+ cation at several levels of ab initio theory r
eveals the existence of four stationary points, three of them are char
acterized as minima and another as a transition state; the 1-iodovinyl
cation is the global minimum, the cyclic iodonium ion is very close i
n energy to the 1-iodovinyl cation and the transition state connecting
the 1-iodovinyl cation and the cyclic iodonium ion is very high in en
ergy.