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-430.460839
Energy at 298.15K 
HF Energy-430.460839
Nuclear repulsion energy339.251256
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 3178 3115 0.00 290.21 0.16 0.28
2 Ag 1630 1598 0.00 7.66 0.69 0.82
3 Ag 1269 1244 0.00 14.16 0.18 0.30
4 Ag 1151 1129 0.00 8.86 0.68 0.81
5 Ag 855 838 0.00 33.17 0.10 0.18
6 Ag 446 438 0.00 4.91 0.44 0.61
7 Au 908 890 0.00 0.00 0.00 0.00
8 Au 421 413 0.00 0.00 0.00 0.00
9 B1g 779 763 0.00 5.75 0.75 0.86
10 B1u 3163 3101 12.23 0.00 0.00 0.00
11 B1u 1523 1493 220.68 0.00 0.00 0.00
12 B1u 1224 1200 172.44 0.00 0.00 0.00
13 B1u 1010 990 1.31 0.00 0.00 0.00
14 B1u 733 719 51.94 0.00 0.00 0.00
15 B2g 892 874 0.00 3.12 0.75 0.86
16 B2g 664 651 0.00 0.16 0.75 0.86
17 B2g 368 361 0.00 4.04 0.75 0.86
18 B2u 3176 3114 8.51 0.00 0.00 0.00
19 B2u 1426 1398 0.71 0.00 0.00 0.00
20 B2u 1352 1325 0.14 0.00 0.00 0.00
21 B2u 1096 1075 12.29 0.00 0.00 0.00
22 B2u 341 335 3.42 0.00 0.00 0.00
23 B3g 3165 3103 0.00 136.26 0.75 0.86
24 B3g 1619 1588 0.00 6.44 0.75 0.86
25 B3g 1283 1258 0.00 2.44 0.75 0.86
26 B3g 634 622 0.00 7.65 0.75 0.86
27 B3g 439 430 0.00 0.16 0.75 0.86
28 B3u 809 793 73.72 0.00 0.00 0.00
29 B3u 500 490 9.58 0.00 0.00 0.00
30 B3u 156 153 1.14 0.00 0.00 0.00

Unscaled Zero Point Vibrational Energy (zpe) 18104.1 cm-1
Scaled (by 0.9804) Zero Point Vibrational Energy (zpe) 17749.2 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
0.18661 0.04687 0.03746

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 1.378
C2 0.000 0.000 -1.378
C3 0.000 1.222 0.700
C4 0.000 -1.222 0.700
C5 0.000 -1.222 -0.700
C6 0.000 1.222 -0.700
F7 0.000 0.000 2.734
F8 0.000 0.000 -2.734
H9 0.000 2.153 1.265
H10 0.000 -2.153 1.265
H11 0.000 -2.153 -1.265
H12 0.000 2.153 -1.265

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 C6 F7 F8 H9 H10 H11 H12
C12.75581.39721.39722.41072.41071.35644.11222.15562.15563.40863.4086
C22.75582.41072.41071.39721.39724.11221.35643.40863.40862.15562.1556
C31.39722.41072.44372.81651.40042.37293.64541.08873.42143.90502.1745
C41.39722.41072.44371.40042.81652.37293.64543.42141.08872.17453.9050
C52.41071.39722.81651.40042.44373.64542.37293.90502.17451.08873.4214
C62.41071.39721.40042.81652.44373.64542.37292.17453.90503.42141.0887
F71.35644.11222.37292.37293.64543.64545.46862.60622.60624.54194.5419
F84.11221.35643.64543.64542.37292.37295.46864.54194.54192.60622.6062
H92.15563.40861.08873.42143.90502.17452.60624.54194.30524.99362.5301
H102.15563.40863.42141.08872.17453.90502.60624.54194.30522.53014.9936
H113.40862.15563.90502.17451.08873.42144.54192.60624.99362.53014.3052
H123.40862.15562.17453.90503.42141.08874.54192.60622.53014.99364.3052

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 119.016 C1 C3 H9 119.733
C1 C4 C5 119.016 C1 C4 H10 119.733
C2 C5 C4 119.016 C2 C5 H11 119.733
C2 C6 C3 119.016 C2 C6 H12 119.733
C3 C1 C4 121.969 C3 C1 F7 119.016
C3 C6 H12 121.252 C4 C1 F7 119.016
C4 C5 H11 121.252 C5 C2 C6 121.969
C5 C2 F8 119.016 C5 C4 H10 121.252
C6 C2 F8 119.016 C6 C3 H9 121.252
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 0.378      
2 C 0.378      
3 C -0.206      
4 C -0.206      
5 C -0.206      
6 C -0.206      
7 F -0.285      
8 F -0.285      
9 H 0.160      
10 H 0.160      
11 H 0.160      
12 H 0.160      


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 -45.237 0.000 0.000
y 0.000 -36.731 0.000
z 0.000 0.000 -48.605
Traceless
 xyz
x -2.569 0.000 0.000
y 0.000 10.190 0.000
z 0.000 0.000 -7.621
Polar
3z2-r2-15.242
x2-y2-8.506
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.469 0.000 0.000
y 0.000 10.720 0.000
z 0.000 0.000 11.312


<r2> (average value of r2) Å2
<r2> 257.077
(<r2>)1/2 16.034