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

using model chemistry: TPSSh/TZVP

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes D2H 1Ag
Energy calculated at TPSSh/TZVP
 hartrees
Energy at 0K-430.887552
Energy at 298.15K 
HF Energy-430.887552
Nuclear repulsion energy341.162269
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 TPSSh/TZVP
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 3212 3095 0.00 302.32 0.15 0.26
2 Ag 1643 1583 0.00 6.07 0.72 0.84
3 Ag 1263 1217 0.00 24.04 0.07 0.12
4 Ag 1165 1123 0.00 7.49 0.57 0.72
5 Ag 861 830 0.00 36.83 0.06 0.12
6 Ag 451 435 0.00 5.69 0.43 0.60
7 Au 922 889 0.00 0.00 0.00 0.00
8 Au 418 403 0.00 0.00 0.00 0.00
9 B1g 800 771 0.00 0.10 0.75 0.86
10 B1u 3197 3081 5.12 0.00 0.00 0.00
11 B1u 1538 1482 237.12 0.00 0.00 0.00
12 B1u 1221 1176 212.62 0.00 0.00 0.00
13 B1u 1027 989 2.39 0.00 0.00 0.00
14 B1u 743 716 67.48 0.00 0.00 0.00
15 B2g 868 837 0.00 0.26 0.75 0.86
16 B2g 558 538 0.00 1.83 0.75 0.86
17 B2g 340 327 0.00 1.79 0.75 0.86
18 B2u 3211 3094 0.77 0.00 0.00 0.00
19 B2u 1443 1391 0.79 0.00 0.00 0.00
20 B2u 1345 1296 0.01 0.00 0.00 0.00
21 B2u 1109 1069 12.32 0.00 0.00 0.00
22 B2u 345 333 4.71 0.00 0.00 0.00
23 B3g 3199 3083 0.00 124.12 0.75 0.86
24 B3g 1647 1587 0.00 8.77 0.75 0.86
25 B3g 1309 1262 0.00 1.37 0.75 0.86
26 B3g 642 618 0.00 7.78 0.75 0.86
27 B3g 442 426 0.00 0.09 0.75 0.86
28 B3u 832 802 79.46 0.00 0.00 0.00
29 B3u 508 489 16.54 0.00 0.00 0.00
30 B3u 156 151 1.72 0.00 0.00 0.00

Unscaled Zero Point Vibrational Energy (zpe) 18206.6 cm-1
Scaled (by 0.9637) Zero Point Vibrational Energy (zpe) 17545.7 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 TPSSh/TZVP
ABC
0.18876 0.04743 0.03790

See section I.F.4 to change rotational constant units
Geometric Data calculated at TPSSh/TZVP

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 1.215 0.696
C4 0.000 -1.215 0.696
C5 0.000 -1.215 -0.696
C6 0.000 1.215 -0.696
F7 0.000 0.000 2.720
F8 0.000 0.000 -2.720
H9 0.000 2.141 1.258
H10 0.000 -2.141 1.258
H11 0.000 -2.141 -1.258
H12 0.000 2.141 -1.258

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 C6 F7 F8 H9 H10 H11 H12
C12.72951.38661.38662.39242.39241.35524.08472.14322.14323.38533.3853
C22.72952.39242.39241.38661.38664.08471.35523.38533.38532.14322.1432
C31.38662.39242.42962.80041.39262.36033.62581.08273.40203.88292.1624
C41.38662.39242.42961.39262.80042.36033.62583.40201.08272.16243.8829
C52.39241.38662.80041.39262.42963.62582.36033.88292.16241.08273.4020
C62.39241.38661.39262.80042.42963.62582.36032.16243.88293.40201.0827
F71.35524.08472.36032.36033.62583.62585.43992.59222.59224.51724.5172
F84.08471.35523.62583.62582.36032.36035.43994.51724.51722.59222.5922
H92.14323.38531.08273.40203.88292.16242.59224.51724.28104.96552.5158
H102.14323.38533.40201.08272.16243.88292.59224.51724.28102.51584.9655
H113.38532.14323.88292.16241.08273.40204.51722.59224.96552.51584.2810
H123.38532.14322.16243.88293.40201.08274.51722.59222.51584.96554.2810

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 118.822 C1 C3 H9 119.935
C1 C4 C5 118.822 C1 C4 H10 119.935
C2 C5 C4 118.822 C2 C5 H11 119.935
C2 C6 C3 118.822 C2 C6 H12 119.935
C3 C1 C4 122.356 C3 C1 F7 118.822
C3 C6 H12 121.243 C4 C1 F7 118.822
C4 C5 H11 121.243 C5 C2 C6 122.356
C5 C2 F8 118.822 C5 C4 H10 121.243
C6 C2 F8 118.822 C6 C3 H9 121.243
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at TPSSh/TZVP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.261      
2 C 0.261      
3 C -0.159      
4 C -0.159      
5 C -0.159      
6 C -0.159      
7 F -0.187      
8 F -0.187      
9 H 0.122      
10 H 0.122      
11 H 0.122      
12 H 0.122      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.000 0.000 0.000 0.000
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.371 0.000 0.000
y 0.000 11.174 0.000
z 0.000 0.000 11.804


<r2> (average value of r2) Å2
<r2> 255.428
(<r2>)1/2 15.982