# QMMM with PySCF - mixture example units real atom_style full pair_style lj/cut/coul/long 12 pair_modify mix arithmetic bond_style harmonic angle_style harmonic dihedral_style none improper_style none kspace_style pppm 1e-5 read_data data.mixture # QM atoms are IDs 1 to 9 # MM atoms are remaining atoms group qm id 1:9 group mm subtract all qm # remove bonds/angles between QM atoms # set charges to zero on QM atoms delete_bonds qm multi remove special set group qm charge 0.0 neighbor 2.0 bin neigh_modify delay 0 every 1 check yes # QMMM dynamics timestep 0.01 fix 1 all nve fix 2 qm mdi/qmmm direct elements N H C H Cl O H fix_modify 2 energy yes thermo_style custom step cpu temp ke evdwl ecoul epair emol elong & f_2 pe etotal press thermo 1 run 2