$molecule
0 3
Rf
$end

$rem
memory  25000000
!incfock           off
!varthresh         off
scf_final_print   2
jobtype           sp
exchange          hf
scf_algorithm     diis_dm
max_scf_cycles    120
!SCF_CONVERGENCE   8
ECP         lanl2dz
SCF_GUESS         core
$end
