return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

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

using model chemistry: B97D3/6-31G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes D2H 1Ag
Energy calculated at B97D3/6-31G
 hartrees
Energy at 0K-430.377462
Energy at 298.15K 
HF Energy-430.377462
Nuclear repulsion energy336.346572
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 B97D3/6-31G
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 3206 3206 0.00 280.78 0.16 0.27
2 Ag 1622 1622 0.00 7.86 0.73 0.85
3 Ag 1242 1242 0.00 14.57 0.16 0.27
4 Ag 1175 1175 0.00 9.54 0.61 0.76
5 Ag 846 846 0.00 32.26 0.11 0.20
6 Ag 447 447 0.00 6.13 0.42 0.59
7 Au 949 949 0.00 0.00 0.00 0.00
8 Au 432 432 0.00 0.00 0.00 0.00
9 B1g 805 805 0.00 5.16 0.75 0.86
10 B1u 3188 3188 8.23 0.00 0.00 0.00
11 B1u 1525 1525 160.60 0.00 0.00 0.00
12 B1u 1208 1208 128.06 0.00 0.00 0.00
13 B1u 1026 1026 1.96 0.00 0.00 0.00
14 B1u 717 717 51.10 0.00 0.00 0.00
15 B2g 928 928 0.00 2.29 0.75 0.86
16 B2g 676 676 0.00 0.01 0.75 0.86
17 B2g 363 363 0.00 3.50 0.75 0.86
18 B2u 3204 3204 5.69 0.00 0.00 0.00
19 B2u 1426 1426 0.15 0.00 0.00 0.00
20 B2u 1370 1370 0.11 0.00 0.00 0.00
21 B2u 1115 1115 11.89 0.00 0.00 0.00
22 B2u 326 326 5.81 0.00 0.00 0.00
23 B3g 3190 3190 0.00 127.77 0.75 0.86
24 B3g 1623 1623 0.00 8.98 0.75 0.86
25 B3g 1312 1312 0.00 1.78 0.75 0.86
26 B3g 645 645 0.00 7.69 0.75 0.86
27 B3g 429 429 0.00 0.65 0.75 0.86
28 B3u 826 826 99.78 0.00 0.00 0.00
29 B3u 497 497 11.91 0.00 0.00 0.00
30 B3u 155 155 2.83 0.00 0.00 0.00

Unscaled Zero Point Vibrational Energy (zpe) 18236.9 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 18236.9 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 B97D3/6-31G
ABC
0.18525 0.04585 0.03675

See section I.F.4 to change rotational constant units
Geometric Data calculated at B97D3/6-31G

Point Group is D2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.374
C2 0.000 0.000 -1.374
C3 0.000 1.227 0.702
C4 0.000 -1.227 0.702
C5 0.000 -1.227 -0.702
C6 0.000 1.227 -0.702
F7 0.000 0.000 2.773
F8 0.000 0.000 -2.773
H9 0.000 2.156 1.266
H10 0.000 -2.156 1.266
H11 0.000 -2.156 -1.266
H12 0.000 2.156 -1.266

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 C6 F7 F8 H9 H10 H11 H12
C12.74791.39881.39882.41172.41171.39934.14722.15832.15833.40813.4081
C22.74792.41172.41171.39881.39884.14721.39933.40813.40812.15832.1583
C31.39882.41172.45402.82751.40452.40723.68571.08633.42923.91352.1762
C41.39882.41172.45401.40452.82752.40723.68573.42921.08632.17623.9135
C52.41171.39882.82751.40452.45403.68572.40723.91352.17621.08633.4292
C62.41171.39881.40452.82752.45403.68572.40722.17623.91353.42921.0863
F71.39934.14722.40722.40723.68573.68575.54652.63042.63044.57834.5783
F84.14721.39933.68573.68572.40722.40725.54654.57834.57832.63042.6304
H92.15833.40811.08633.42923.91352.17622.63044.57834.31124.99962.5318
H102.15833.40813.42921.08632.17623.91352.63044.57834.31122.53184.9996
H113.40812.15833.91352.17621.08633.42924.57832.63044.99962.53184.3112
H123.40812.15832.17623.91353.42921.08634.57832.63042.53184.99964.3112

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 118.697 C1 C3 H9 120.047
C1 C4 C5 118.697 C1 C4 H10 120.047
C2 C5 C4 118.697 C2 C5 H11 120.047
C2 C6 C3 118.697 C2 C6 H12 120.047
C3 C1 C4 122.606 C3 C1 F7 118.697
C3 C6 H12 121.256 C4 C1 F7 118.697
C4 C5 H11 121.256 C5 C2 C6 122.606
C5 C2 F8 118.697 C5 C4 H10 121.256
C6 C2 F8 118.697 C6 C3 H9 121.256
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B97D3/6-31G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.285      
2 C 0.285      
3 C -0.150      
4 C -0.150      
5 C -0.150      
6 C -0.150      
7 F -0.319      
8 F -0.319      
9 H 0.167      
10 H 0.167      
11 H 0.167      
12 H 0.167      


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
Primitive
 xyz
x -45.663 0.000 0.000
y 0.000 -36.250 0.000
z 0.000 0.000 -52.920
Traceless
 xyz
x -1.078 0.000 0.000
y 0.000 13.041 0.000
z 0.000 0.000 -11.963
Polar
3z2-r2-23.927
x2-y2-9.413
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.969 0.000 0.000
y 0.000 10.384 0.000
z 0.000 0.000 11.296


<r2> (average value of r2) Å2
<r2> 262.126
(<r2>)1/2 16.190