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

using model chemistry: PBE1PBE/cc-pVDZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes D2H 1Ag
Energy calculated at PBE1PBE/cc-pVDZ
 hartrees
Energy at 0K-430.288136
Energy at 298.15K 
HF Energy-430.288136
Nuclear repulsion energy341.527304
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 PBE1PBE/cc-pVDZ
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 3248 3123 0.00 289.17 0.16 0.27
2 Ag 1702 1637 0.00 5.88 0.63 0.78
3 Ag 1324 1273 0.00 19.33 0.13 0.23
4 Ag 1145 1101 0.00 7.79 0.69 0.82
5 Ag 884 850 0.00 32.09 0.09 0.17
6 Ag 456 438 0.00 4.37 0.47 0.64
7 Au 970 932 0.00 0.00 0.00 0.00
8 Au 437 420 0.00 0.00 0.00 0.00
9 B1g 821 789 0.00 2.92 0.75 0.86
10 B1u 3233 3108 4.14 0.00 0.00 0.00
11 B1u 1566 1505 281.82 0.00 0.00 0.00
12 B1u 1252 1204 146.14 0.00 0.00 0.00
13 B1u 1024 985 3.29 0.00 0.00 0.00
14 B1u 756 727 55.87 0.00 0.00 0.00
15 B2g 952 915 0.00 1.74 0.75 0.86
16 B2g 727 699 0.00 0.13 0.75 0.86
17 B2g 389 374 0.00 4.15 0.75 0.86
18 B2u 3247 3122 0.01 0.00 0.00 0.00
19 B2u 1461 1404 1.09 0.00 0.00 0.00
20 B2u 1390 1336 0.53 0.00 0.00 0.00
21 B2u 1094 1052 15.33 0.00 0.00 0.00
22 B2u 350 336 3.80 0.00 0.00 0.00
23 B3g 3235 3111 0.00 130.44 0.75 0.86
24 B3g 1690 1625 0.00 7.57 0.75 0.86
25 B3g 1279 1230 0.00 2.31 0.75 0.86
26 B3g 645 620 0.00 7.74 0.75 0.86
27 B3g 444 427 0.00 0.08 0.75 0.86
28 B3u 865 832 74.36 0.00 0.00 0.00
29 B3u 530 509 14.99 0.00 0.00 0.00
30 B3u 163 156 1.36 0.00 0.00 0.00

Unscaled Zero Point Vibrational Energy (zpe) 18637.0 cm-1
Scaled (by 0.9615) Zero Point Vibrational Energy (zpe) 17919.4 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 PBE1PBE/cc-pVDZ
ABC
0.18914 0.04752 0.03798

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBE1PBE/cc-pVDZ

Point Group is D2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.372
C2 0.000 0.000 -1.372
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 2.714
F8 0.000 0.000 -2.714
H9 0.000 2.144 1.264
H10 0.000 -2.144 1.264
H11 0.000 -2.144 -1.264
H12 0.000 2.144 -1.264

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 C6 F7 F8 H9 H10 H11 H12
C12.74441.38831.38832.39782.39781.34164.08592.14682.14683.39783.3978
C22.74442.39782.39781.38831.38834.08591.34163.39783.39782.14682.1468
C31.38832.39782.42552.79691.39272.35393.61931.09053.40443.88712.1700
C41.38832.39782.42551.39272.79692.35393.61933.40441.09052.17003.8871
C52.39781.38832.79691.39272.42553.61932.35393.88712.17001.09053.4044
C62.39781.38831.39272.79692.42553.61932.35392.17003.88713.40441.0905
F71.34164.08592.35392.35393.61933.61935.42752.58832.58834.51854.5185
F84.08591.34163.61933.61932.35392.35395.42754.51854.51852.58832.5883
H92.14683.39781.09053.40443.88712.17002.58834.51854.28804.97742.5274
H102.14683.39783.40441.09052.17003.88712.58834.51854.28802.52744.9774
H113.39782.14683.88712.17001.09053.40444.51852.58834.97742.52744.2880
H123.39782.14682.17003.88713.40441.09054.51852.58832.52744.97744.2880

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 119.131 C1 C3 H9 119.518
C1 C4 C5 119.131 C1 C4 H10 119.518
C2 C5 C4 119.131 C2 C5 H11 119.518
C2 C6 C3 119.131 C2 C6 H12 119.518
C3 C1 C4 121.739 C3 C1 F7 119.131
C3 C6 H12 121.352 C4 C1 F7 119.131
C4 C5 H11 121.352 C5 C2 C6 121.739
C5 C2 F8 119.131 C5 C4 H10 121.352
C6 C2 F8 119.131 C6 C3 H9 121.352
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBE1PBE/cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.148      
2 C 0.148      
3 C -0.018      
4 C -0.018      
5 C -0.018      
6 C -0.018      
7 F -0.172      
8 F -0.172      
9 H 0.030      
10 H 0.030      
11 H 0.030      
12 H 0.030      


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 -46.082 0.000 0.000
y 0.000 -36.938 0.000
z 0.000 0.000 -49.512
Traceless
 xyz
x -2.857 0.000 0.000
y 0.000 10.859 0.000
z 0.000 0.000 -8.002
Polar
3z2-r2-16.004
x2-y2-9.144
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.740 0.000 0.000
y 0.000 10.806 0.000
z 0.000 0.000 11.047


<r2> (average value of r2) Å2
<r2> 254.458
(<r2>)1/2 15.952