Abinitio Study of the Identity of the Reaction-Product between C-3 and Water in Cryogenic Matrices

by Liu, R. F.; Zhou, X. F.; Pulay, P.

Geometry optimization, energy calculation, and ab initio vibrational analysis were carried out on different conformers Of singlet and triplet hydroxyethynylcarbene and 3-hydroxypropadienylidene. They are probable products of thc reaction C3 + H2O. Theoretical methods used include restricted Hartree-Fock, unrestricted Hartree-Fock natural orbital-complete active space, and Moller-Plesset perturbation theory. By comparing the calculated harmonic frequencies (empirically scaled by 0.9) with observed FTIR frequencies of the product of the reaction C3 + H2O in cryogenic matrices, it appears likely that the product is singlet 3-hydroxypropadienylidene instead of thc previously proposed hydroxyethynylcarbene.

Journal
Journal of Physical Chemistry
Volume
96
Issue
14
Year
1992
Start Page
5748-5752
URL
https://dx.doi.org/10.1021/j100193a018
ISBN/ISSN
0022-3654
DOI
10.1021/j100193a018