Is it inappropriate to use the LANL2DZ basis set in Gaussian calculations for a molecule containing only C, H, N, O elements?

I am using # opt freq=(raman,vcd) b3lyp/lanl2dz pop=(nbo,savenbo) scf=qc geom=connectivity for geometry optimization+other calculations of an organic molecule. I am getting the results using this...

18 July 2021 4,845 3 View