Guassian QST3 output has 1 imaginary frequency but I don't think it is the correct TS. What should I do?

I ran a QST3 calculation under an expanded basis set: S 0 6-311+G(2df,p) **** H C N O 0 6-311+G(d,p) **** (this is the same expanded basis set I used for optimizations) When the calculation...

03 March 2017 2,695 3 View