RHF(UHF)+MP2 and CASSCF calculations of potential energy surfaces' sections
of cations X-OH2+ (X = C, N, O) and corresponding neutral particles are pe
rformed. It is shown that all cations should be relatively stable both with
respect to X-O bond breaking and intramolecular rearrangements. Reactions
of electron capture by these cations are also studied. (C) 2000 John Wiley
& Sons, Inc.