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

using model chemistry: BLYP/STO-3G

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/STO-3G
 hartrees
Energy at 0K-424.814341
Energy at 298.15K 
HF Energy-424.814341
Nuclear repulsion energy331.363453
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/STO-3G
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 3362 3110 0.00 164.01 0.18 0.31
2 Ag 1685 1559 0.00 21.71 0.75 0.86
3 Ag 1365 1263 0.00 7.41 0.49 0.66
4 Ag 1193 1103 0.00 10.07 0.70 0.82
5 Ag 851 788 0.00 28.99 0.10 0.18
6 Ag 437 404 0.00 3.89 0.47 0.64
7 Au 960 888 0.00 0.00 0.00 0.00
8 Au 411 380 0.00 0.00 0.00 0.00
9 B1g 818 757 0.00 5.93 0.75 0.86
10 B1u 3343 3093 0.50 0.00 0.00 0.00
11 B1u 1587 1468 157.82 0.00 0.75 0.86
12 B1u 1331 1231 42.70 0.00 0.00 0.00
13 B1u 1010 934 1.71 0.00 0.00 0.00
14 B1u 746 690 7.50 0.00 0.00 0.00
15 B2g 935 865 0.00 2.77 0.75 0.86
16 B2g 679 629 0.00 0.00 0.75 0.86
17 B2g 352 326 0.00 1.27 0.75 0.86
18 B2u 3359 3108 13.21 0.00 0.00 0.00
19 B2u 1468 1358 0.13 0.00 0.00 0.00
20 B2u 1266 1171 7.48 0.00 0.00 0.00
21 B2u 1131 1046 2.92 0.00 0.00 0.00
22 B2u 325 300 0.67 0.00 0.00 0.00
23 B3g 3347 3096 0.00 91.25 0.75 0.86
24 B3g 1587 1468 0.00 3.84 0.75 0.86
25 B3g 1327 1227 0.00 2.89 0.75 0.86
26 B3g 640 592 0.00 6.47 0.75 0.86
27 B3g 420 389 0.00 0.63 0.75 0.86
28 B3u 803 743 42.72 0.00 0.00 0.00
29 B3u 492 455 3.91 0.00 0.00 0.00
30 B3u 148 137 0.00 0.00 0.00 0.00

Unscaled Zero Point Vibrational Energy (zpe) 18687.2 cm-1
Scaled (by 0.9252) Zero Point Vibrational Energy (zpe) 17289.4 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 BLYP/STO-3G
ABC
0.17930 0.04441 0.03559

See section I.F.4 to change rotational constant units
Geometric Data calculated at BLYP/STO-3G

Point Group is D2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.427
C2 0.000 0.000 -1.427
C3 0.000 1.246 0.707
C4 0.000 -1.246 0.707
C5 0.000 -1.246 -0.707
C6 0.000 1.246 -0.707
F7 0.000 0.000 2.811
F8 0.000 0.000 -2.811
H9 0.000 2.198 1.270
H10 0.000 -2.198 1.270
H11 0.000 -2.198 -1.270
H12 0.000 2.198 -1.270

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 C6 F7 F8 H9 H10 H11 H12
C12.85441.43921.43922.47142.47141.38364.23802.20412.20413.47933.4793
C22.85442.47142.47141.43921.43924.23801.38363.47933.47932.20412.2041
C31.43922.47142.49222.86551.41412.44513.73211.10603.49013.97132.1940
C41.43922.47142.49221.41412.86552.44513.73213.49011.10602.19403.9713
C52.47141.43922.86551.41412.49223.73212.44513.97132.19401.10603.4901
C62.47141.43921.41412.86552.49223.73212.44512.19403.97133.49011.1060
F71.38364.23802.44512.44513.73213.73215.62162.68492.68494.63494.6349
F84.23801.38363.73213.73212.44512.44515.62164.63494.63492.68492.6849
H92.20413.47931.10603.49013.97132.19402.68494.63494.39685.07732.5390
H102.20413.47933.49011.10602.19403.97132.68494.63494.39682.53905.0773
H113.47932.20413.97132.19401.10603.49014.63492.68495.07732.53904.3968
H123.47932.20412.19403.97133.49011.10604.63492.68492.53905.07734.3968

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 120.024 C1 C3 H9 119.410
C1 C4 C5 120.024 C1 C4 H10 119.410
C2 C5 C4 120.024 C2 C5 H11 119.410
C2 C6 C3 120.024 C2 C6 H12 119.410
C3 C1 C4 119.953 C3 C1 F7 120.024
C3 C6 H12 120.567 C4 C1 F7 120.024
C4 C5 H11 120.567 C5 C2 C6 119.953
C5 C2 F8 120.024 C5 C4 H10 120.567
C6 C2 F8 120.024 C6 C3 H9 120.567
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/STO-3G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.072      
2 C 0.072      
3 C -0.098      
4 C -0.098      
5 C -0.098      
6 C -0.098      
7 F -0.038      
8 F -0.038      
9 H 0.081      
10 H 0.081      
11 H 0.081      
12 H 0.081      


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 -41.454 0.000 0.000
y 0.000 -36.652 0.000
z 0.000 0.000 -40.025
Traceless
 xyz
x -3.116 0.000 0.000
y 0.000 4.088 0.000
z 0.000 0.000 -0.972
Polar
3z2-r2-1.943
x2-y2-4.802
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.052 0.000 0.000
y 0.000 7.400 0.000
z 0.000 0.000 9.234


<r2> (average value of r2) Å2
<r2> 266.293
(<r2>)1/2 16.318