scf energy error


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Gets Around
I would suggest 3 things:

1) Do a preliminary geometry optimization with a smaller basis set, unless you have already tried that and it finds the wrong local minimum
2) Use spherical functions with "basis spherical"
3) Increase the maxiter for scf solution, e.g.

scf
 maxiter 999
end


Before any "task scf".

EDIT: and you may need more geometry steps too, e.g.

driver
 maxiter 999
end


before your optimization task(s).