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: mPW1PW91/Def2TZVPP

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes D2H 1Ag
Energy calculated at mPW1PW91/Def2TZVPP
 hartrees
Energy at 0K-430.792624
Energy at 298.15K 
HF Energy-430.792624
Nuclear repulsion energy343.097229
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 mPW1PW91/Def2TZVPP
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 3237 3237 0.00 286.34 0.14 0.24
2 Ag 1680 1680 0.00 4.84 0.69 0.82
3 Ag 1304 1304 0.00 26.39 0.06 0.12
4 Ag 1164 1164 0.00 7.09 0.63 0.77
5 Ag 881 881 0.00 36.60 0.06 0.11
6 Ag 459 459 0.00 5.03 0.39 0.56
7 Au 974 974 0.00 0.00 0.00 0.00
8 Au 438 438 0.00 0.00 0.00 0.00
9 B1g 821 821 0.00 0.00 0.75 0.86
10 B1u 3222 3222 4.12 0.00 0.00 0.00
11 B1u 1561 1561 270.73 0.00 0.00 0.00
12 B1u 1249 1249 185.64 0.00 0.00 0.00
13 B1u 1034 1034 2.26 0.00 0.00 0.00
14 B1u 760 760 60.01 0.00 0.00 0.00
15 B2g 955 955 0.00 0.12 0.75 0.86
16 B2g 724 724 0.00 0.55 0.75 0.86
17 B2g 383 383 0.00 2.99 0.75 0.86
18 B2u 3236 3236 0.10 0.00 0.00 0.00
19 B2u 1461 1461 0.63 0.00 0.00 0.00
20 B2u 1357 1357 0.09 0.00 0.00 0.00
21 B2u 1110 1110 12.43 0.00 0.00 0.00
22 B2u 353 353 4.08 0.00 0.00 0.00
23 B3g 3224 3224 0.00 114.28 0.75 0.86
24 B3g 1678 1678 0.00 8.24 0.75 0.86
25 B3g 1307 1307 0.00 1.45 0.75 0.86
26 B3g 650 650 0.00 6.46 0.75 0.86
27 B3g 451 451 0.00 0.04 0.75 0.86
28 B3u 866 866 75.78 0.00 0.00 0.00
29 B3u 525 525 19.84 0.00 0.00 0.00
30 B3u 161 161 1.42 0.00 0.00 0.00

Unscaled Zero Point Vibrational Energy (zpe) 18611.7 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 18611.7 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 mPW1PW91/Def2TZVPP
ABC
0.19077 0.04798 0.03834

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/Def2TZVPP

Point Group is D2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.362
C2 0.000 0.000 -1.362
C3 0.000 1.208 0.693
C4 0.000 -1.208 0.693
C5 0.000 -1.208 -0.693
C6 0.000 1.208 -0.693
F7 0.000 0.000 2.702
F8 0.000 0.000 -2.702
H9 0.000 2.132 1.254
H10 0.000 -2.132 1.254
H11 0.000 -2.132 -1.254
H12 0.000 2.132 -1.254

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 C6 F7 F8 H9 H10 H11 H12
C12.72411.38091.38092.38392.38391.34024.06432.13442.13443.37453.3745
C22.72412.38392.38391.38091.38094.06431.34023.37453.37452.13442.1344
C31.38092.38392.41612.78551.38632.34433.60391.08063.38653.86592.1551
C41.38092.38392.41611.38632.78552.34433.60393.38651.08062.15513.8659
C52.38391.38092.78551.38632.41613.60392.34433.86592.15511.08063.3865
C62.38391.38091.38632.78552.41613.60392.34432.15513.86593.38651.0806
F71.34024.06432.34432.34433.60393.60395.40442.57712.57714.49394.4939
F84.06431.34023.60393.60392.34432.34435.40444.49394.49392.57712.5771
H92.13443.37451.08063.38653.86592.15512.57714.49394.26344.94632.5079
H102.13443.37453.38651.08062.15513.86592.57714.49394.26342.50794.9463
H113.37452.13443.86592.15511.08063.38654.49392.57714.94632.50794.2634
H123.37452.13442.15513.86593.38651.08064.49392.57712.50794.94634.2634

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 118.974 C1 C3 H9 119.762
C1 C4 C5 118.974 C1 C4 H10 119.762
C2 C5 C4 118.974 C2 C5 H11 119.762
C2 C6 C3 118.974 C2 C6 H12 119.762
C3 C1 C4 122.051 C3 C1 F7 118.974
C3 C6 H12 121.263 C4 C1 F7 118.974
C4 C5 H11 121.263 C5 C2 C6 122.051
C5 C2 F8 118.974 C5 C4 H10 121.263
C6 C2 F8 118.974 C6 C3 H9 121.263
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/Def2TZVPP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.237      
2 C 0.237      
3 C -0.139      
4 C -0.139      
5 C -0.139      
6 C -0.139      
7 F -0.195      
8 F -0.195      
9 H 0.118      
10 H 0.118      
11 H 0.118      
12 H 0.118      


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 -46.171 0.000 0.000
y 0.000 -36.802 0.000
z 0.000 0.000 -50.875
Traceless
 xyz
x -2.333 0.000 0.000
y 0.000 11.722 0.000
z 0.000 0.000 -9.389
Polar
3z2-r2-18.778
x2-y2-9.370
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.681 0.000 0.000
y 0.000 11.304 0.000
z 0.000 0.000 11.837


<r2> (average value of r2) Å2
<r2> 252.585
(<r2>)1/2 15.893