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All results from a given calculation for C6H4F2 (1,4-difluorobenzene)

using model chemistry: PM3

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
Energy calculated at PM3
 hartrees
Energy at 0K 
Energy at 298.15K-0.100876
HF Energy-0.100876
Nuclear repulsion energy209.568263
The energy at 298.15K was derived from the energy at 0K and an integrated heat capacity that used the calculated vibrational frequencies.
Vibrational Frequencies calculated at PM3
Rotational Constants (cm-1) from geometry optimized at PM3
ABC
0.18595 0.04727 0.03769

See section I.F.4 to change rotational constant units
Geometric Data calculated at PM3

Point Group is D2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.379
C2 0.000 0.000 -1.379
C3 0.000 1.222 0.694
C4 0.000 -1.222 0.694
C5 0.000 -1.222 -0.694
C6 0.000 1.222 -0.694
F7 0.000 0.000 2.722
F8 0.000 0.000 -2.722
H9 0.000 2.168 1.248
H10 0.000 -2.168 1.248
H11 0.000 -2.168 -1.248
H12 0.000 2.168 -1.248

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 C6 F7 F8 H9 H10 H11 H12
C12.75831.40121.40122.40672.40671.34334.10152.17182.17183.40603.4060
C22.75832.40672.40671.40121.40124.10151.34333.40603.40602.17182.1718
C31.40122.40672.44462.81131.38822.36813.62861.09583.43513.90702.1600
C41.40122.40672.44461.38822.81132.36813.62863.43511.09582.16003.9070
C52.40671.40122.81131.38822.44463.62862.36813.90702.16001.09583.4351
C62.40671.40121.38822.81132.44463.62862.36812.16003.90703.43511.0958
F71.34334.10152.36812.36813.62863.62865.44482.62182.62184.52364.5236
F84.10151.34333.62863.62862.36812.36815.44484.52364.52362.62182.6218
H92.17183.40601.09583.43513.90702.16002.62184.52364.33575.00272.4958
H102.17183.40603.43511.09582.16003.90702.62184.52364.33572.49585.0027
H113.40602.17183.90702.16001.09583.43514.52362.62185.00272.49584.3357
H123.40602.17182.16003.90703.43511.09584.52362.62182.49585.00274.3357

picture of 1,4-difluorobenzene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C3 C6 119.267 C1 C3 H9 120.377
C1 C4 C5 119.267 C1 C4 H10 120.377
C2 C5 C4 119.267 C2 C5 H11 120.377
C2 C6 C3 119.267 C2 C6 H12 120.377
C3 C1 C4 121.465 C3 C1 F7 119.267
C3 C6 H12 120.356 C4 C1 F7 119.267
C4 C5 H11 120.356 C5 C2 C6 121.465
C5 C2 F8 119.267 C5 C4 H10 120.356
C6 C2 F8 119.267 C6 C3 H9 120.356
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability