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

using model chemistry: MP4=FULL/6-311+G(3df,2p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes D2H 1Ag
Energy calculated at MP4=FULL/6-311+G(3df,2p)
 hartrees
Energy at 0K-430.264634
Energy at 298.15K 
HF Energy-428.548297
Nuclear repulsion energy341.459079
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 MP4=FULL/6-311+G(3df,2p)
Rotational Constants (cm-1) from geometry optimized at MP4=FULL/6-311+G(3df,2p)
ABC
0.18840 0.04759 0.03800

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP4=FULL/6-311+G(3df,2p)

Point Group is D2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.365
C2 0.000 0.000 -1.365
C3 0.000 1.216 0.698
C4 0.000 -1.216 0.698
C5 0.000 -1.216 -0.698
C6 0.000 1.216 -0.698
F7 0.000 0.000 2.713
F8 0.000 0.000 -2.713
H9 0.000 2.140 1.261
H10 0.000 -2.140 1.261
H11 0.000 -2.140 -1.261
H12 0.000 2.140 -1.261

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 C6 F7 F8 H9 H10 H11 H12
C12.73031.38761.38762.39462.39461.34804.07832.14252.14253.38783.3878
C22.73032.39462.39461.38761.38764.07831.34803.38783.38782.14252.1425
C31.38762.39462.43272.80431.39502.35423.62101.08203.40343.88612.1655
C41.38762.39462.43271.39502.80432.35423.62103.40341.08202.16553.8861
C52.39461.38762.80431.39502.43273.62102.35423.88612.16551.08203.4034
C62.39461.38761.39502.80432.43273.62102.35422.16553.88613.40341.0820
F71.34804.07832.35422.35423.62103.62105.42632.58612.58614.51384.5138
F84.07831.34803.62103.62102.35422.35425.42634.51384.51382.58612.5861
H92.14253.38781.08203.40343.88612.16552.58614.51384.28004.96792.5222
H102.14253.38783.40341.08202.16553.88612.58614.51384.28002.52224.9679
H113.38782.14253.88612.16551.08203.40344.51382.58614.96792.52224.2800
H123.38782.14252.16553.88613.40341.08204.51382.58612.52224.96794.2800

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 118.762 C1 C3 H9 119.846
C1 C4 C5 118.762 C1 C4 H10 119.846
C2 C5 C4 118.762 C2 C5 H11 119.846
C2 C6 C3 118.762 C2 C6 H12 119.846
C3 C1 C4 122.475 C3 C1 F7 118.762
C3 C6 H12 121.391 C4 C1 F7 118.762
C4 C5 H11 121.391 C5 C2 C6 122.475
C5 C2 F8 118.762 C5 C4 H10 121.391
C6 C2 F8 118.762 C6 C3 H9 121.391
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability