A Calculation of the Rates of the Ortho‐Para Conversions and Isotope Exchanges in Hydrogen

摘要: The rates of the various elementary reactions type H+H2→H2+H, involving ortho‐para conversions or isotope exchanges, have been calculated by absolute reaction rate theory, using new fundamental quantum‐mechanical data for shape H3 energy surface, but estimating activation to fit experimental results. transition complex is linear and symmetric, in contrast with asymmetric semiempirical resulting some qualitative, as well quantitative, differences calculation. tunnel effect correction computed exactly, on assumption that potential barrier Eckart type. disparity between results obtained different authors probable inaccuracies their make it very difficult assess accuracy constants.