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

using model chemistry: B3LYP/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 B3LYP/STO-3G
 hartrees
Energy at 0K-424.975987
Energy at 298.15K 
HF Energy-424.975987
Nuclear repulsion energy334.509074
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 B3LYP/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 3470 3097 0.00 153.64 0.18 0.31
2 Ag 1761 1572 0.00 24.58 0.74 0.85
3 Ag 1420 1268 0.00 7.39 0.33 0.50
4 Ag 1227 1095 0.00 10.15 0.67 0.81
5 Ag 891 795 0.00 27.02 0.10 0.18
6 Ag 452 404 0.00 3.33 0.48 0.65
7 Au 1016 906 0.00 0.00 0.00 0.00
8 Au 430 384 0.00 0.00 0.00 0.00
9 B1g 866 773 0.00 5.79 0.75 0.86
10 B1u 3451 3080 2.01 0.00 0.00 0.00
11 B1u 1651 1474 179.73 0.00 0.00 0.00
12 B1u 1378 1229 40.47 0.00 0.00 0.00
13 B1u 1050 937 1.04 0.00 0.00 0.00
14 B1u 773 690 8.68 0.00 0.00 0.00
15 B2g 989 882 0.00 2.83 0.75 0.86
16 B2g 725 647 0.00 0.00 0.75 0.86
17 B2g 372 332 0.00 1.36 0.75 0.86
18 B2u 3468 3095 24.20 0.00 0.00 0.00
19 B2u 1519 1356 0.00 0.00 0.00 0.00
20 B2u 1288 1149 8.59 0.00 0.00 0.00
21 B2u 1167 1041 2.94 0.00 0.00 0.00
22 B2u 336 300 1.30 0.00 0.00 0.00
23 B3g 3456 3084 0.00 86.48 0.75 0.86
24 B3g 1668 1488 0.00 4.61 0.75 0.86
25 B3g 1369 1222 0.00 2.85 0.75 0.86
26 B3g 663 592 0.00 6.19 0.75 0.86
27 B3g 434 387 0.00 0.56 0.75 0.86
28 B3u 853 761 45.45 0.00 0.00 0.00
29 B3u 521 465 2.91 0.00 0.00 0.00
30 B3u 157 140 0.12 0.00 0.00 0.00

Unscaled Zero Point Vibrational Energy (zpe) 19409.3 cm-1
Scaled (by 0.8924) Zero Point Vibrational Energy (zpe) 17320.9 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 B3LYP/STO-3G
ABC
0.18305 0.04523 0.03627

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/STO-3G

Point Group is D2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.413
C2 0.000 0.000 -1.413
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 2.785
F8 0.000 0.000 -2.785
H9 0.000 2.178 1.260
H10 0.000 -2.178 1.260
H11 0.000 -2.178 -1.260
H12 0.000 2.178 -1.260

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 C6 F7 F8 H9 H10 H11 H12
C12.82591.42361.42362.44752.44751.37224.19812.18332.18333.44823.4482
C22.82592.44752.44751.42361.42364.19811.37223.44823.44822.18332.1833
C31.42362.44752.46592.83691.40262.42133.69811.09803.45643.93482.1775
C41.42362.44752.46591.40262.83692.42133.69813.45641.09802.17753.9348
C52.44751.42362.83691.40262.46593.69812.42133.93482.17751.09803.4564
C62.44751.42361.40262.83692.46593.69812.42132.17753.93483.45641.0980
F71.37224.19812.42132.42133.69813.69815.57032.65862.65864.59454.5945
F84.19811.37223.69813.69812.42132.42135.57034.59454.59452.65862.6586
H92.18333.44821.09803.45643.93482.17752.65864.59454.35595.03272.5208
H102.18333.44823.45641.09802.17753.93482.65864.59454.35592.52085.0327
H113.44822.18333.93482.17751.09803.45644.59452.65865.03272.52084.3559
H123.44822.18332.17753.93483.45641.09804.59452.65862.52085.03274.3559

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 119.993 C1 C3 H9 119.397
C1 C4 C5 119.993 C1 C4 H10 119.397
C2 C5 C4 119.993 C2 C5 H11 119.397
C2 C6 C3 119.993 C2 C6 H12 119.397
C3 C1 C4 120.014 C3 C1 F7 119.993
C3 C6 H12 120.610 C4 C1 F7 119.993
C4 C5 H11 120.610 C5 C2 C6 120.014
C5 C2 F8 119.993 C5 C4 H10 120.610
C6 C2 F8 119.993 C6 C3 H9 120.610
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/STO-3G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.087      
2 C 0.087      
3 C -0.098      
4 C -0.098      
5 C -0.098      
6 C -0.098      
7 F -0.064      
8 F -0.064      
9 H 0.086      
10 H 0.086      
11 H 0.086      
12 H 0.086      


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 -41.328 0.000 0.000
y 0.000 -36.373 0.000
z 0.000 0.000 -41.586
Traceless
 xyz
x -2.348 0.000 0.000
y 0.000 5.084 0.000
z 0.000 0.000 -2.736
Polar
3z2-r2-5.472
x2-y2-4.955
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.000 0.000 0.000
y 0.000 7.161 0.000
z 0.000 0.000 8.715


<r2> (average value of r2) Å2
<r2> 262.036
(<r2>)1/2 16.188