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: B3LYP/6-311G*

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/6-311G*
 hartrees
Energy at 0K-430.828236
Energy at 298.15K 
HF Energy-430.828236
Nuclear repulsion energy341.157089
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/6-311G*
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 3210 3102 0.00 284.81 0.18 0.30
2 Ag 1658 1602 0.00 6.10 0.64 0.78
3 Ag 1274 1231 0.00 19.62 0.11 0.20
4 Ag 1165 1126 0.00 6.21 0.65 0.79
5 Ag 867 838 0.00 31.80 0.09 0.17
6 Ag 456 441 0.00 5.03 0.45 0.62
7 Au 947 915 0.00 0.00 0.00 0.00
8 Au 435 421 0.00 0.00 0.00 0.00
9 B1g 809 782 0.00 0.72 0.75 0.86
10 B1u 3196 3088 9.13 0.00 0.00 0.00
11 B1u 1547 1495 237.75 0.00 0.00 0.00
12 B1u 1232 1190 186.61 0.00 0.00 0.00
13 B1u 1029 994 1.63 0.00 0.00 0.00
14 B1u 745 720 64.48 0.00 0.00 0.00
15 B2g 930 899 0.00 0.80 0.75 0.86
16 B2g 705 681 0.00 0.30 0.75 0.86
17 B2g 380 367 0.00 3.78 0.75 0.86
18 B2u 3209 3101 4.28 0.00 0.00 0.00
19 B2u 1448 1399 0.45 0.00 0.00 0.00
20 B2u 1331 1287 0.09 0.00 0.00 0.00
21 B2u 1110 1073 14.54 0.00 0.00 0.00
22 B2u 346 334 4.69 0.00 0.00 0.00
23 B3g 3198 3090 0.00 130.15 0.75 0.86
24 B3g 1652 1597 0.00 7.71 0.75 0.86
25 B3g 1307 1263 0.00 1.52 0.75 0.86
26 B3g 649 627 0.00 7.58 0.75 0.86
27 B3g 447 432 0.00 0.16 0.75 0.86
28 B3u 852 823 91.46 0.00 0.00 0.00
29 B3u 519 502 17.63 0.00 0.00 0.00
30 B3u 161 155 1.59 0.00 0.00 0.00

Unscaled Zero Point Vibrational Energy (zpe) 18407.2 cm-1
Scaled (by 0.9663) Zero Point Vibrational Energy (zpe) 17786.9 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/6-311G*
ABC
0.18920 0.04735 0.03787

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/6-311G*

Point Group is D2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.369
C2 0.000 0.000 -1.369
C3 0.000 1.213 0.696
C4 0.000 -1.213 0.696
C5 0.000 -1.213 -0.696
C6 0.000 1.213 -0.696
F7 0.000 0.000 2.721
F8 0.000 0.000 -2.721
H9 0.000 2.139 1.260
H10 0.000 -2.139 1.260
H11 0.000 -2.139 -1.260
H12 0.000 2.139 -1.260

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 C6 F7 F8 H9 H10 H11 H12
C12.73841.38731.38732.39562.39561.35194.09032.14182.14183.38903.3890
C22.73842.39562.39561.38731.38734.09031.35193.38903.38902.14182.1418
C31.38732.39562.42652.79791.39302.36033.62661.08353.39923.88122.1640
C41.38732.39562.42651.39302.79792.36033.62663.39921.08352.16403.8812
C52.39561.38732.79791.39302.42653.62662.36033.88122.16401.08353.3992
C62.39561.38731.39302.79792.42653.62662.36032.16403.88123.39921.0835
F71.35194.09032.36032.36033.62663.62665.44222.59072.59074.51904.5190
F84.09031.35193.62663.62662.36032.36035.44224.51904.51902.59072.5907
H92.14183.38901.08353.39923.88122.16402.59074.51904.27804.96462.5191
H102.14183.38903.39921.08352.16403.88122.59074.51904.27802.51914.9646
H113.38902.14183.88122.16401.08353.39924.51902.59074.96462.51914.2780
H123.38902.14182.16403.88123.39921.08354.51902.59072.51914.96464.2780

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 119.006 C1 C3 H9 119.685
C1 C4 C5 119.006 C1 C4 H10 119.685
C2 C5 C4 119.006 C2 C5 H11 119.685
C2 C6 C3 119.006 C2 C6 H12 119.685
C3 C1 C4 121.988 C3 C1 F7 119.006
C3 C6 H12 121.308 C4 C1 F7 119.006
C4 C5 H11 121.308 C5 C2 C6 121.988
C5 C2 F8 119.006 C5 C4 H10 121.308
C6 C2 F8 119.006 C6 C3 H9 121.308
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/6-311G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.316      
2 C 0.316      
3 C -0.259      
4 C -0.259      
5 C -0.259      
6 C -0.259      
7 F -0.238      
8 F -0.238      
9 H 0.220      
10 H 0.220      
11 H 0.220      
12 H 0.220      


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 -46.543 0.000 0.000
y 0.000 -37.070 0.000
z 0.000 0.000 -51.227
Traceless
 xyz
x -2.395 0.000 0.000
y 0.000 11.815 0.000
z 0.000 0.000 -9.420
Polar
3z2-r2-18.840
x2-y2-9.473
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.128 0.000 0.000
y 0.000 10.794 0.000
z 0.000 0.000 11.192


<r2> (average value of r2) Å2
<r2> 255.468
(<r2>)1/2 15.983