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

using model chemistry: B2PLYP=FULLultrafine/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 B2PLYP=FULLultrafine/6-311+G(3df,2p)
 hartrees
Energy at 0K-430.617528
Energy at 298.15K 
HF Energy-430.099612
Nuclear repulsion energy342.277563
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 B2PLYP=FULLultrafine/6-311+G(3df,2p)
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 Ag 3232 3232 0.00 288.73 0.13 0.23
2 Ag 1652 1652 0.00 4.86 0.75 0.86
3 Ag 1275 1275 0.00 31.35 0.06 0.12
4 Ag 1165 1165 0.00 7.73 0.59 0.74
5 Ag 866 866 0.00 40.44 0.05 0.09
6 Ag 455 455 0.00 5.64 0.32 0.48
7 Au 974 974 0.00 0.00 0.43 0.60
8 Au 433 433 0.00 0.00 0.44 0.61
9 B1g 822 822 0.00 0.67 0.75 0.86
10 B1u 3214 3214 3.71 0.00 0.60 0.75
11 B1u 1541 1541 233.82 0.00 0.53 0.69
12 B1u 1198 1198 205.23 0.00 0.38 0.55
13 B1u 966 966 37.40 0.00 0.47 0.64
14 B1u 712 712 37.44 0.00 0.36 0.53
15 B2g 946 946 0.00 0.03 0.75 0.86
16 B2g 671 671 0.00 1.26 0.75 0.86
17 B2g 377 377 0.00 2.80 0.75 0.86
18 B2u 3231 3231 0.05 0.00 0.14 0.25
19 B2u 1448 1448 0.62 0.00 0.67 0.80
20 B2u 1358 1358 0.01 0.00 0.75 0.85
21 B2u 1109 1109 10.85 0.00 0.67 0.80
22 B2u 351 351 4.52 0.00 0.54 0.70
23 B3g 3219 3219 0.00 112.66 0.75 0.86
24 B3g 1655 1655 0.00 8.65 0.75 0.86
25 B3g 1308 1308 0.00 1.22 0.75 0.86
26 B3g 639 639 0.00 5.54 0.75 0.86
27 B3g 448 448 0.00 0.01 0.75 0.86
28 B3u 864 864 74.52 0.00 0.75 0.86
29 B3u 520 520 18.66 0.00 0.75 0.86
30 B3u 160 160 1.76 0.00 0.00 0.00

Unscaled Zero Point Vibrational Energy (zpe) 18403.7 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 18403.7 cm-1
See section III.C.1 List or set vibrational scaling factors to change the scale factors used here.
See section III.C.2 Calculate a vibrational scaling factor for a given set of molecules to determine the least squares best scaling factor.
Rotational Constants (cm-1) from geometry optimized at B2PLYP=FULLultrafine/6-311+G(3df,2p)
ABC
0.18980 0.04776 0.03816

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP=FULLultrafine/6-311+G(3df,2p)

Point Group is D2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.362
C2 0.000 0.000 -1.362
C3 0.000 1.212 0.695
C4 0.000 -1.212 0.695
C5 0.000 -1.212 -0.695
C6 0.000 1.212 -0.695
F7 0.000 0.000 2.709
F8 0.000 0.000 -2.709
H9 0.000 2.134 1.256
H10 0.000 -2.134 1.256
H11 0.000 -2.134 -1.256
H12 0.000 2.134 -1.256

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 C6 F7 F8 H9 H10 H11 H12
C12.72461.38311.38312.38782.38781.34694.07152.13632.13633.37783.3778
C22.72462.38782.38781.38311.38314.07151.34693.37783.37782.13632.1363
C31.38312.38782.42332.79391.39052.35033.61361.07933.39203.87292.1583
C41.38312.38782.42331.39052.79392.35033.61363.39201.07932.15833.8729
C52.38781.38312.79391.39052.42333.61362.35033.87292.15831.07933.3920
C62.38781.38311.39052.79392.42333.61362.35032.15833.87293.39201.0793
F71.34694.07152.35032.35033.61363.61365.41842.58142.58144.50304.5030
F84.07151.34693.61363.61362.35032.35035.41844.50304.50302.58142.5814
H92.13633.37781.07933.39203.87292.15832.58144.50304.26734.95202.5124
H102.13633.37783.39201.07932.15833.87292.58144.50304.26732.51244.9520
H113.37782.13633.87292.15831.07933.39204.50302.58144.95202.51244.2673
H123.37782.13632.15833.87293.39201.07934.50302.58142.51244.95204.2673

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 118.836 C1 C3 H9 119.847
C1 C4 C5 118.836 C1 C4 H10 119.847
C2 C5 C4 118.836 C2 C5 H11 119.847
C2 C6 C3 118.836 C2 C6 H12 119.847
C3 C1 C4 122.329 C3 C1 F7 118.836
C3 C6 H12 121.317 C4 C1 F7 118.836
C4 C5 H11 121.317 C5 C2 C6 122.329
C5 C2 F8 118.836 C5 C4 H10 121.317
C6 C2 F8 118.836 C6 C3 H9 121.317
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability