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

using model chemistry: TPSSh/STO-3G

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/STO-3G
 hartrees
Energy at 0K-425.095471
Energy at 298.15K 
HF Energy-425.095471
Nuclear repulsion energy334.490105
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/STO-3G
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 3474 3474 0.00 157.31 0.18 0.31
2 Ag 1763 1763 0.00 23.73 0.75 0.86
3 Ag 1422 1422 0.00 7.12 0.37 0.54
4 Ag 1230 1230 0.00 10.54 0.68 0.81
5 Ag 888 888 0.00 27.41 0.10 0.18
6 Ag 449 449 0.00 3.38 0.48 0.65
7 Au 1008 1008 0.00 0.00 0.00 0.00
8 Au 426 426 0.00 0.00 0.00 0.00
9 B1g 862 862 0.00 5.94 0.75 0.86
10 B1u 3455 3455 1.64 0.00 0.00 0.00
11 B1u 1653 1653 174.59 0.00 0.00 0.00
12 B1u 1379 1379 44.22 0.00 0.00 0.00
13 B1u 1051 1051 1.34 0.00 0.00 0.00
14 B1u 773 773 8.49 0.00 0.00 0.00
15 B2g 981 981 0.00 2.84 0.75 0.86
16 B2g 716 716 0.00 0.00 0.75 0.86
17 B2g 371 371 0.00 1.29 0.75 0.86
18 B2u 3472 3472 21.99 0.00 0.00 0.00
19 B2u 1525 1525 0.05 0.00 0.00 0.00
20 B2u 1315 1315 8.42 0.00 0.00 0.00
21 B2u 1168 1168 2.33 0.00 0.00 0.00
22 B2u 335 335 1.10 0.00 0.00 0.00
23 B3g 3459 3459 0.00 88.02 0.75 0.86
24 B3g 1669 1669 0.00 4.28 0.75 0.86
25 B3g 1371 1371 0.00 3.03 0.75 0.86
26 B3g 659 659 0.00 6.31 0.75 0.86
27 B3g 431 431 0.00 0.54 0.75 0.86
28 B3u 844 844 43.28 0.00 0.00 0.00
29 B3u 516 516 3.15 0.00 0.00 0.00
30 B3u 155 155 0.05 0.00 0.00 0.00

Unscaled Zero Point Vibrational Energy (zpe) 19408.0 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 19408.0 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/STO-3G
ABC
0.18310 0.04522 0.03626

See section I.F.4 to change rotational constant units
Geometric Data calculated at TPSSh/STO-3G

Point Group is D2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.414
C2 0.000 0.000 -1.414
C3 0.000 1.233 0.701
C4 0.000 -1.233 0.701
C5 0.000 -1.233 -0.701
C6 0.000 1.233 -0.701
F7 0.000 0.000 2.786
F8 0.000 0.000 -2.786
H9 0.000 2.179 1.259
H10 0.000 -2.179 1.259
H11 0.000 -2.179 -1.259
H12 0.000 2.179 -1.259

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 C6 F7 F8 H9 H10 H11 H12
C12.82721.42381.42382.44752.44751.37224.19942.18492.18493.44823.4482
C22.82722.44752.44751.42381.42384.19941.37223.44823.44822.18492.1849
C31.42382.44752.46512.83581.40182.42193.69811.09893.45733.93462.1762
C41.42382.44752.46511.40182.83582.42193.69813.45731.09892.17623.9346
C52.44751.42382.83581.40182.46513.69812.42193.93462.17621.09893.4573
C62.44751.42381.40182.83582.46513.69812.42192.17623.93463.45731.0989
F71.37224.19942.42192.42193.69813.69815.57152.66132.66134.59414.5941
F84.19941.37223.69813.69812.42192.42195.57154.59414.59412.66132.6613
H92.18493.44821.09893.45733.93462.17622.66134.59414.35895.03342.5170
H102.18493.44823.45731.09892.17623.93462.66134.59414.35892.51705.0334
H113.44822.18493.93462.17621.09893.45734.59412.66135.03342.51704.3589
H123.44822.18492.17623.93463.45731.09894.59412.66132.51705.03344.3589

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 120.038 C1 C3 H9 119.469
C1 C4 C5 120.038 C1 C4 H10 119.469
C2 C5 C4 120.038 C2 C5 H11 119.469
C2 C6 C3 120.038 C2 C6 H12 119.469
C3 C1 C4 119.925 C3 C1 F7 120.038
C3 C6 H12 120.494 C4 C1 F7 120.038
C4 C5 H11 120.494 C5 C2 C6 119.925
C5 C2 F8 120.038 C5 C4 H10 120.494
C6 C2 F8 120.038 C6 C3 H9 120.494
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at TPSSh/STO-3G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.082      
2 C 0.082      
3 C -0.094      
4 C -0.094      
5 C -0.094      
6 C -0.094      
7 F -0.056      
8 F -0.056      
9 H 0.081      
10 H 0.081      
11 H 0.081      
12 H 0.081      


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 1.001 0.000 0.000
y 0.000 7.159 0.000
z 0.000 0.000 8.786


<r2> (average value of r2) Å2
<r2> 262.038
(<r2>)1/2 16.188