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

using model chemistry: MP2=FULL/Def2TZVPP

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes D2H 1Ag
Energy calculated at MP2=FULL/Def2TZVPP
 hartrees
Energy at 0K-430.149256
Energy at 298.15K 
HF Energy-428.576022
Nuclear repulsion energy342.294531
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 MP2=FULL/Def2TZVPP
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 3256 3256 0.00 275.69 0.14 0.24
2 Ag 1665 1665 0.00 5.15 0.64 0.78
3 Ag 1298 1298 0.00 24.36 0.08 0.14
4 Ag 1167 1167 0.00 6.66 0.62 0.77
5 Ag 869 869 0.00 36.36 0.06 0.12
6 Ag 454 454 0.00 5.00 0.40 0.57
7 Au 966 966 0.00 0.00 0.00 0.00
8 Au 441 441 0.00 0.00 0.00 0.00
9 B1g 826 826 0.00 0.04 0.75 0.86
10 B1u 3241 3241 1.87 0.00 0.69 0.82
11 B1u 1555 1555 260.26 0.00 0.00 0.00
12 B1u 1247 1247 173.46 0.00 0.00 0.00
13 B1u 1032 1032 2.22 0.00 0.00 0.00
14 B1u 759 759 55.35 0.00 0.00 0.00
15 B2g 927 927 0.00 0.05 0.75 0.86
16 B2g 694 694 0.00 0.72 0.75 0.86
17 B2g 382 382 0.00 2.91 0.75 0.86
18 B2u 3255 3255 0.15 0.00 0.54 0.70
19 B2u 1475 1475 0.92 0.00 0.50 0.66
20 B2u 1436 1436 0.04 0.00 0.50 0.67
21 B2u 1109 1109 12.30 0.00 0.49 0.66
22 B2u 350 350 4.18 0.00 0.00 0.00
23 B3g 3244 3244 0.00 107.24 0.75 0.86
24 B3g 1663 1663 0.00 5.81 0.75 0.86
25 B3g 1303 1303 0.00 1.55 0.75 0.86
26 B3g 642 642 0.00 6.50 0.75 0.86
27 B3g 445 445 0.00 0.03 0.75 0.86
28 B3u 864 864 77.60 0.00 0.00 0.00
29 B3u 526 526 18.16 0.00 0.00 0.00
30 B3u 162 162 1.45 0.00 0.00 0.00

Unscaled Zero Point Vibrational Energy (zpe) 18625.4 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 18625.4 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 MP2=FULL/Def2TZVPP
ABC
0.19004 0.04771 0.03813

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/Def2TZVPP

Point Group is D2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.366
C2 0.000 0.000 -1.366
C3 0.000 1.211 0.695
C4 0.000 -1.211 0.695
C5 0.000 -1.211 -0.695
C6 0.000 1.211 -0.695
F7 0.000 0.000 2.710
F8 0.000 0.000 -2.710
H9 0.000 2.132 1.255
H10 0.000 -2.132 1.255
H11 0.000 -2.132 -1.255
H12 0.000 2.132 -1.255

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 C6 F7 F8 H9 H10 H11 H12
C12.73131.38411.38412.39042.39041.34434.07562.13462.13463.37803.3780
C22.73132.39042.39041.38411.38414.07561.34433.37803.37802.13462.1346
C31.38412.39042.42182.79271.39072.35053.61421.07743.38923.86992.1566
C41.38412.39042.42181.39072.79272.35053.61423.38921.07742.15663.8699
C52.39041.38412.79271.39072.42183.61422.35053.86992.15661.07743.3892
C62.39041.38411.39072.79272.42183.61422.35052.15663.86993.38921.0774
F71.34434.07562.35052.35053.61423.61425.41982.58112.58114.50144.5014
F84.07561.34433.61423.61422.35052.35055.41984.50144.50142.58112.5811
H92.13463.37801.07743.38923.86992.15662.58114.50144.26354.94722.5095
H102.13463.37803.38921.07742.15663.86992.58114.50144.26352.50954.9472
H113.37802.13463.86992.15661.07743.38924.50142.58114.94722.50954.2635
H123.37802.13462.15663.86993.38921.07744.50142.58112.50954.94724.2635

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 118.966 C1 C3 H9 119.756
C1 C4 C5 118.966 C1 C4 H10 119.756
C2 C5 C4 118.966 C2 C5 H11 119.756
C2 C6 C3 118.966 C2 C6 H12 119.756
C3 C1 C4 122.067 C3 C1 F7 118.966
C3 C6 H12 121.278 C4 C1 F7 118.966
C4 C5 H11 121.278 C5 C2 C6 122.067
C5 C2 F8 118.966 C5 C4 H10 121.278
C6 C2 F8 118.966 C6 C3 H9 121.278
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability