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

using model chemistry: BLYP/cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes D2H 1Ag
Energy calculated at BLYP/cc-pVTZ
 hartrees
Energy at 0K-430.773647
Energy at 298.15K 
HF Energy-430.773647
Nuclear repulsion energy339.039353
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 BLYP/cc-pVTZ
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 3133 3123 0.00 314.79 0.17 0.29
2 Ag 1580 1575 0.00 5.88 0.69 0.82
3 Ag 1213 1209 0.00 20.83 0.10 0.19
4 Ag 1133 1129 0.00 8.02 0.59 0.74
5 Ag 838 836 0.00 34.60 0.08 0.14
6 Ag 444 443 0.00 5.55 0.40 0.57
7 Au 928 925 0.00 0.00 0.00 0.00
8 Au 424 423 0.00 0.00 0.00 0.00
9 B1g 784 781 0.00 0.74 0.75 0.86
10 B1u 3119 3109 6.92 0.00 0.00 0.00
11 B1u 1487 1482 198.58 0.00 0.00 0.00
12 B1u 1179 1175 192.91 0.00 0.00 0.00
13 B1u 1001 998 0.29 0.00 0.00 0.00
14 B1u 720 718 65.76 0.00 0.00 0.00
15 B2g 911 909 0.00 0.66 0.75 0.86
16 B2g 690 687 0.00 0.41 0.75 0.86
17 B2g 363 362 0.00 3.50 0.75 0.86
18 B2u 3132 3122 2.14 0.00 0.00 0.00
19 B2u 1398 1394 0.40 0.00 0.00 0.00
20 B2u 1306 1302 0.00 0.00 0.00 0.00
21 B2u 1082 1078 12.41 0.00 0.00 0.00
22 B2u 335 334 3.58 0.00 0.00 0.00
23 B3g 3121 3111 0.00 133.58 0.75 0.86
24 B3g 1586 1581 0.00 7.13 0.75 0.86
25 B3g 1273 1269 0.00 1.98 0.75 0.86
26 B3g 631 629 0.00 6.89 0.75 0.86
27 B3g 435 434 0.00 0.16 0.75 0.86
28 B3u 824 822 69.45 0.00 0.00 0.00
29 B3u 500 498 16.71 0.00 0.00 0.00
30 B3u 153 153 1.41 0.00 0.00 0.00

Unscaled Zero Point Vibrational Energy (zpe) 17860.2 cm-1
Scaled (by 0.997) Zero Point Vibrational Energy (zpe) 17806.6 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 BLYP/cc-pVTZ
ABC
0.18699 0.04675 0.03740

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

Point Group is D2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.373
C2 0.000 0.000 -1.373
C3 0.000 1.221 0.700
C4 0.000 -1.221 0.700
C5 0.000 -1.221 -0.700
C6 0.000 1.221 -0.700
F7 0.000 0.000 2.741
F8 0.000 0.000 -2.741
H9 0.000 2.149 1.264
H10 0.000 -2.149 1.264
H11 0.000 -2.149 -1.264
H12 0.000 2.149 -1.264

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 C6 F7 F8 H9 H10 H11 H12
C12.74571.39391.39392.40562.40561.36774.11342.15202.15203.40203.4020
C22.74572.40562.40561.39391.39394.11341.36773.40203.40202.15202.1520
C31.39392.40562.44152.81441.39992.37793.65071.08653.41693.90062.1726
C41.39392.40562.44151.39992.81442.37793.65073.41691.08652.17263.9006
C52.40561.39392.81441.39992.44153.65072.37793.90062.17261.08653.4169
C62.40561.39391.39992.81442.44153.65072.37792.17263.90063.41691.0865
F71.36774.11342.37792.37793.65073.65075.48112.60752.60754.54504.5450
F84.11341.36773.65073.65072.37792.37795.48114.54504.54502.60752.6075
H92.15203.40201.08653.41693.90062.17262.60754.54504.29854.98702.5284
H102.15203.40203.41691.08652.17263.90062.60754.54504.29852.52844.9870
H113.40202.15203.90062.17261.08653.41694.54502.60754.98702.52844.2985
H123.40202.15202.17263.90063.41691.08654.54502.60752.52844.98704.2985

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 118.864 C1 C3 H9 119.849
C1 C4 C5 118.864 C1 C4 H10 119.849
C2 C5 C4 118.864 C2 C5 H11 119.849
C2 C6 C3 118.864 C2 C6 H12 119.849
C3 C1 C4 122.272 C3 C1 F7 118.864
C3 C6 H12 121.287 C4 C1 F7 118.864
C4 C5 H11 121.287 C5 C2 C6 122.272
C5 C2 F8 118.864 C5 C4 H10 121.287
C6 C2 F8 118.864 C6 C3 H9 121.287
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.263      
2 C 0.263      
3 C -0.155      
4 C -0.155      
5 C -0.155      
6 C -0.155      
7 F -0.171      
8 F -0.171      
9 H 0.110      
10 H 0.110      
11 H 0.110      
12 H 0.110      


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 -46.485 0.000 0.000
y 0.000 -37.881 0.000
z 0.000 0.000 -51.461
Traceless
 xyz
x -1.814 0.000 0.000
y 0.000 11.093 0.000
z 0.000 0.000 -9.279
Polar
3z2-r2-18.558
x2-y2-8.604
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.085 0.000 0.000
y 0.000 11.698 0.000
z 0.000 0.000 12.365


<r2> (average value of r2) Å2
<r2> 258.480
(<r2>)1/2 16.077