%nproc=16 
%mem = 60GB 
%chk=1F_isomer_2.chk 
#P opt EmpiricalDispersion=GD3BJ integral(grid=ultrafinegrid) GFInput pop=full IOP(3/74=-78) IOP(6/7=3) IOP(3/5=10) IOP(3/175=01217700) IOP(3/177=414500) IOP(3/178=4859300) SCF=YQC 
 
1F_isomer_2 opt 
 
+0 1
F      2.712550   -0.224209    0.000000
C      1.366740   -0.112969    0.000000
C      0.569244   -1.262491    0.000000
C     -0.819473   -1.147491    0.000000
C     -1.411163    0.116642    0.000000
C     -0.614207    1.265994    0.000000
C      0.774546    1.151418    0.000000
H      1.025642   -2.241260    0.000000
H     -1.436152   -2.036664    0.000000
H     -2.485539    0.205446    0.000000
H     -1.072084    2.243986    0.000000
H      1.389897    2.041600    0.000000