Impossible if you bought an older edition or the international version they just switch some chapters around and sell it for $ 20 on Amazon . <| sep |> My cat gets these when he is itchy and we haven ' t trimmed his nails well . I think it ' s little cuts and then they get scabby . <| sep |> I have a few questions and comments that might help you out , What energy value are you using in your analysis ? Did you perform a frequency calculation on the optimized geometry ? This will let you characterize the surface in terms of minima and maxima . Your reactant and product will have zero imaginary frequencies , your transition structure will have one imaginary frequency that connects the two on the potential energy surface See link below to Gaussian websiteAlso , performing the frequency calculation provides the thermochemical analysis which contains the free energy Gibbs , I think this would be the most appropriate energy value to useIs there a way to search for intermediates and additional transition states ? Yes , IRCIRCMax have a feeling this is exactly what you ' re looking for . Keep in mind by default calculations in Gaussian are performed in the gas phase . If solvent effects are important in your system your thermochemical analysis might be highly inaccurate .