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

using model chemistry: B2PLYP=FULLultrafine/6-311G*

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/6-311G*
 hartrees
Energy at 0K-430.487955
Energy at 298.15K 
HF Energy-430.051538
Nuclear repulsion energy341.196846
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/6-311G*
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 3237 3237 0.00 277.49 0.18 0.30
2 Ag 1668 1668 0.00 5.71 0.63 0.78
3 Ag 1285 1285 0.00 19.19 0.12 0.21
4 Ag 1172 1172 0.00 6.15 0.66 0.79
5 Ag 868 868 0.00 31.92 0.09 0.17
6 Ag 456 456 0.00 5.03 0.46 0.63
7 Au 932 932 0.00 0.00 0.00 0.00
8 Au 432 432 0.00 0.00 0.00 0.00
9 B1g 809 809 0.00 0.66 0.75 0.86
10 B1u 3223 3223 7.11 0.00 0.00 0.00
11 B1u 1556 1556 246.18 0.00 0.00 0.00
12 B1u 1240 1240 178.03 0.00 0.00 0.00
13 B1u 1032 1032 2.24 0.00 0.00 0.00
14 B1u 748 748 60.25 0.00 0.00 0.00
15 B2g 902 902 0.00 0.68 0.75 0.86
16 B2g 674 674 0.00 0.49 0.75 0.86
17 B2g 379 379 0.00 3.55 0.75 0.86
18 B2u 3237 3237 2.73 0.00 0.00 0.00
19 B2u 1454 1454 0.34 0.00 0.00 0.00
20 B2u 1357 1357 0.33 0.00 0.00 0.00
21 B2u 1115 1115 14.68 0.00 0.00 0.00
22 B2u 347 347 4.83 0.00 0.00 0.00
23 B3g 3225 3225 0.00 125.61 0.75 0.86
24 B3g 1661 1661 0.00 7.39 0.75 0.86
25 B3g 1313 1313 0.00 1.45 0.75 0.86
26 B3g 649 649 0.00 7.56 0.75 0.86
27 B3g 445 445 0.00 0.14 0.75 0.86
28 B3u 848 848 95.38 0.00 0.00 0.00
29 B3u 517 517 17.66 0.00 0.00 0.00
30 B3u 161 161 1.54 0.00 0.00 0.00

Unscaled Zero Point Vibrational Energy (zpe) 18469.1 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 18469.1 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/6-311G*
ABC
0.18900 0.04739 0.03789

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP=FULLultrafine/6-311G*

Point Group is D2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.370
C2 0.000 0.000 -1.370
C3 0.000 1.214 0.697
C4 0.000 -1.214 0.697
C5 0.000 -1.214 -0.697
C6 0.000 1.214 -0.697
F7 0.000 0.000 2.719
F8 0.000 0.000 -2.719
H9 0.000 2.139 1.260
H10 0.000 -2.139 1.260
H11 0.000 -2.139 -1.260
H12 0.000 2.139 -1.260

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 C6 F7 F8 H9 H10 H11 H12
C12.73971.38801.38802.39712.39711.34954.08922.14172.14173.38983.3898
C22.73972.39712.39711.38801.38804.08921.34953.38983.38982.14172.1417
C31.38802.39712.42822.79991.39412.35883.62571.08273.39993.88232.1645
C41.38802.39712.42821.39412.79992.35883.62573.39991.08272.16453.8823
C52.39711.38802.79991.39412.42823.62572.35883.88232.16451.08273.3999
C62.39711.38801.39412.79992.42823.62572.35882.16453.88233.39991.0827
F71.34954.08922.35882.35883.62573.62575.43872.58942.58944.51774.5177
F84.08921.34953.62573.62572.35882.35885.43874.51774.51772.58942.5894
H92.14173.38981.08273.39993.88232.16452.58944.51774.27784.96482.5199
H102.14173.38983.39991.08272.16453.88232.58944.51774.27782.51994.9648
H113.38982.14173.88232.16451.08273.39994.51772.58944.96482.51994.2778
H123.38982.14172.16453.88233.39991.08274.51772.58942.51994.96484.2778

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 118.993 C1 C3 H9 119.680
C1 C4 C5 118.993 C1 C4 H10 119.680
C2 C5 C4 118.993 C2 C5 H11 119.680
C2 C6 C3 118.993 C2 C6 H12 119.680
C3 C1 C4 122.014 C3 C1 F7 118.993
C3 C6 H12 121.327 C4 C1 F7 118.993
C4 C5 H11 121.327 C5 C2 C6 122.014
C5 C2 F8 118.993 C5 C4 H10 121.327
C6 C2 F8 118.993 C6 C3 H9 121.327
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability