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

using model chemistry: HSEh1PBE/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 HSEh1PBE/6-31G*
 hartrees
Energy at 0K-430.292542
Energy at 298.15K 
HF Energy-430.292542
Nuclear repulsion energy341.859334
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 HSEh1PBE/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 3258 3098 0.00 267.58 0.16 0.27
2 Ag 1703 1620 0.00 6.90 0.68 0.81
3 Ag 1332 1267 0.00 14.77 0.17 0.29
4 Ag 1172 1114 0.00 8.51 0.69 0.82
5 Ag 887 843 0.00 31.95 0.10 0.17
6 Ag 457 435 0.00 4.38 0.47 0.64
7 Au 953 907 0.00 0.00 0.00 0.00
8 Au 436 415 0.00 0.00 0.00 0.00
9 B1g 817 777 0.00 4.74 0.75 0.86
10 B1u 3244 3085 6.31 0.00 0.00 0.00
11 B1u 1580 1503 266.54 0.00 0.00 0.00
12 B1u 1272 1210 150.30 0.00 0.00 0.00
13 B1u 1035 985 2.68 0.00 0.00 0.00
14 B1u 759 722 48.66 0.00 0.00 0.00
15 B2g 933 887 0.00 2.72 0.75 0.86
16 B2g 696 662 0.00 0.18 0.75 0.86
17 B2g 385 366 0.00 4.14 0.75 0.86
18 B2u 3257 3098 1.32 0.00 0.00 0.00
19 B2u 1472 1400 0.67 0.00 0.00 0.00
20 B2u 1381 1313 0.59 0.00 0.00 0.00
21 B2u 1117 1062 13.40 0.00 0.00 0.00
22 B2u 350 333 3.90 0.00 0.00 0.00
23 B3g 3246 3087 0.00 123.59 0.75 0.86
24 B3g 1688 1606 0.00 7.11 0.75 0.86
25 B3g 1308 1244 0.00 2.17 0.75 0.86
26 B3g 649 617 0.00 7.48 0.75 0.86
27 B3g 447 425 0.00 0.09 0.75 0.86
28 B3u 849 808 85.77 0.00 0.00 0.00
29 B3u 521 496 10.69 0.00 0.00 0.00
30 B3u 163 155 1.30 0.00 0.00 0.00

Unscaled Zero Point Vibrational Energy (zpe) 18682.6 cm-1
Scaled (by 0.951) Zero Point Vibrational Energy (zpe) 17767.1 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 HSEh1PBE/6-31G*
ABC
0.18927 0.04764 0.03806

See section I.F.4 to change rotational constant units
Geometric Data calculated at HSEh1PBE/6-31G*

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 2.711
F8 0.000 0.000 -2.711
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
C12.73831.38741.38742.39472.39471.34184.08022.14202.14203.38963.3896
C22.73832.39472.39471.38741.38744.08021.34183.38963.38962.14202.1420
C31.38742.39472.42592.79651.39122.35223.61611.08483.39943.88102.1641
C41.38742.39472.42591.39122.79652.35223.61613.39941.08482.16413.8810
C52.39471.38742.79651.39122.42593.61612.35223.88102.16411.08483.3994
C62.39471.38741.39122.79652.42593.61612.35222.16413.88103.39941.0848
F71.34184.08022.35222.35223.61613.61615.42202.58482.58484.51074.5107
F84.08021.34183.61613.61612.35222.35225.42204.51074.51072.58482.5848
H92.14203.38961.08483.39943.88102.16412.58484.51074.27844.96562.5204
H102.14203.38963.39941.08482.16413.88102.58484.51074.27842.52044.9656
H113.38962.14203.88102.16411.08483.39944.51072.58484.96562.52044.2784
H123.38962.14202.16413.88103.39941.08484.51072.58482.52044.96564.2784

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 119.043 C1 C3 H9 119.593
C1 C4 C5 119.043 C1 C4 H10 119.593
C2 C5 C4 119.043 C2 C5 H11 119.593
C2 C6 C3 119.043 C2 C6 H12 119.593
C3 C1 C4 121.913 C3 C1 F7 119.043
C3 C6 H12 121.363 C4 C1 F7 119.043
C4 C5 H11 121.363 C5 C2 C6 121.913
C5 C2 F8 119.043 C5 C4 H10 121.363
C6 C2 F8 119.043 C6 C3 H9 121.363
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HSEh1PBE/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.384      
2 C 0.384      
3 C -0.236      
4 C -0.236      
5 C -0.236      
6 C -0.236      
7 F -0.297      
8 F -0.297      
9 H 0.193      
10 H 0.193      
11 H 0.193      
12 H 0.193      


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 -45.519 0.000 0.000
y 0.000 -36.421 0.000
z 0.000 0.000 -48.817
Traceless
 xyz
x -2.900 0.000 0.000
y 0.000 10.747 0.000
z 0.000 0.000 -7.848
Polar
3z2-r2-15.695
x2-y2-9.098
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.439 0.000 0.000
y 0.000 10.400 0.000
z 0.000 0.000 10.815


<r2> (average value of r2) Å2
<r2> 253.590
(<r2>)1/2 15.925