Mg and K cations .def file

[ergrhn]

Hello everyone,

I am trying to calculate H2 adsorption in clinoptilolite. I want to use Mg and K as cations.

But there are not any .def file belong these atoms.

How can i solve this problem.

[David Dubbeldam]

All structure, molecule and force field files are examples. For you own use case, you need to construct these files with the exact parameters that you want.