memory 1500 mb basis mybas { assign 6-31+G** assign Fe lanl2dz } set { basis def2-svp reference uhf maxiter 200 print_trajectory_xyz_file True writer_file_label Psi4Test DFT_SPHERICAL_POINTS 590 DFT_RADIAL_POINTS 70 DFT_PRUNING_SCHEME TREUTLER } set_num_threads(3) with open("TACHCr_2xC4.xyz") as f: xyz=f.read() mol1=Molecule.from_string(xyz) mol1.set_molecular_charge(1) mol1.set_multiplicity(4) activate(mol1) optimize('b3lyp-d3',dertype=1)