I like to plot with GaussView 5 the ESP surface of a charged molecule. The charge is +2, the molecule is paraquat.
The problem is when I generate a cube with GaussView with the total density and as surface the ESP I just got a deep blue surface. With the molecules without charge, this way works for me. I just request an optimization with the keyword opt. No other options. Do I have to perform other calculations to see the ESP surface of the molecule? Or is it not possible because the molecule has a charge. I think the charge is localized at the nitrogen atoms. But maybe Gaussian can not display this?
Thanks in advance!