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

using model chemistry: B3LYP/aug-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 B3LYP/aug-cc-pVDZ
 hartrees
Energy at 0K-430.774467
Energy at 298.15K 
HF Energy-430.774467
Nuclear repulsion energy339.861698
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 B3LYP/aug-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 3218 3123 0.00 306.41 0.13 0.23
2 Ag 1644 1596 0.00 5.06 0.75 0.86
3 Ag 1256 1219 0.00 34.47 0.06 0.12
4 Ag 1150 1116 0.00 8.50 0.58 0.73
5 Ag 860 834 0.00 40.10 0.05 0.10
6 Ag 452 438 0.00 5.86 0.31 0.47
7 Au 953 925 0.00 0.00 0.00 0.00
8 Au 434 421 0.00 0.00 0.00 0.00
9 B1g 805 781 0.00 0.44 0.75 0.86
10 B1u 3204 3109 4.15 0.00 0.00 0.00
11 B1u 1522 1477 240.98 0.00 0.00 0.00
12 B1u 1201 1166 197.28 0.00 0.00 0.00
13 B1u 1016 986 5.36 0.00 0.00 0.00
14 B1u 734 713 69.62 0.00 0.00 0.00
15 B2g 938 910 0.00 0.00 0.75 0.86
16 B2g 711 690 0.00 0.90 0.75 0.86
17 B2g 371 360 0.00 3.05 0.75 0.86
18 B2u 3217 3122 0.21 0.00 0.13 0.00
19 B2u 1434 1392 0.50 0.00 0.00 0.00
20 B2u 1349 1309 0.03 0.00 0.00 0.00
21 B2u 1098 1065 10.64 0.00 0.00 0.00
22 B2u 343 333 4.59 0.00 0.00 0.00
23 B3g 3206 3111 0.00 121.66 0.75 0.86
24 B3g 1655 1606 0.00 9.44 0.75 0.86
25 B3g 1284 1246 0.00 1.33 0.75 0.86
26 B3g 642 623 0.00 5.34 0.75 0.86
27 B3g 442 429 0.00 0.07 0.75 0.86
28 B3u 849 823 76.37 0.00 0.00 0.00
29 B3u 511 496 19.51 0.00 0.00 0.00
30 B3u 158 153 1.85 0.00 0.00 0.00

Unscaled Zero Point Vibrational Energy (zpe) 18327.7 cm-1
Scaled (by 0.9704) Zero Point Vibrational Energy (zpe) 17785.2 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 B3LYP/aug-cc-pVDZ
ABC
0.18721 0.04710 0.03763

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/aug-cc-pVDZ

Point Group is D2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.368
C2 0.000 0.000 -1.368
C3 0.000 1.220 0.699
C4 0.000 -1.220 0.699
C5 0.000 -1.220 -0.699
C6 0.000 1.220 -0.699
F7 0.000 0.000 2.729
F8 0.000 0.000 -2.729
H9 0.000 2.150 1.265
H10 0.000 -2.150 1.265
H11 0.000 -2.150 -1.265
H12 0.000 2.150 -1.265

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 C6 F7 F8 H9 H10 H11 H12
C12.73621.39111.39112.40042.40041.36144.09762.15272.15273.39933.3993
C22.73622.40042.40041.39111.39114.09761.36143.39933.39932.15272.1527
C31.39112.40042.43942.81191.39862.36843.63931.08883.41703.90052.1733
C41.39112.40042.43941.39862.81192.36843.63933.41701.08882.17333.9005
C52.40041.39112.81191.39862.43943.63932.36843.90052.17331.08883.4170
C62.40041.39111.39862.81192.43943.63932.36842.17333.90053.41701.0888
F71.36144.09762.36842.36843.63933.63935.45902.60172.60174.53634.5363
F84.09761.36143.63933.63932.36842.36845.45904.53634.53632.60172.6017
H92.15273.39931.08883.41703.90052.17332.60174.53634.30044.98922.5296
H102.15273.39933.41701.08882.17333.90052.60174.53634.30042.52964.9892
H113.39932.15273.90052.17331.08883.41704.53632.60174.98922.52964.3004
H123.39932.15272.17333.90053.41701.08884.53632.60172.52964.98924.3004

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 118.738 C1 C3 H9 119.973
C1 C4 C5 118.738 C1 C4 H10 119.973
C2 C5 C4 118.738 C2 C5 H11 119.973
C2 C6 C3 118.738 C2 C6 H12 119.973
C3 C1 C4 122.525 C3 C1 F7 118.738
C3 C6 H12 121.289 C4 C1 F7 118.738
C4 C5 H11 121.289 C5 C2 C6 122.525
C5 C2 F8 118.738 C5 C4 H10 121.289
C6 C2 F8 118.738 C6 C3 H9 121.289
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/aug-cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.148      
2 C 0.148      
3 C 0.901      
4 C 0.901      
5 C 0.901      
6 C 0.901      
7 F -0.581      
8 F -0.581      
9 H -0.685      
10 H -0.685      
11 H -0.685      
12 H -0.685      


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 -46.818 0.000 0.000
y 0.000 -37.351 0.000
z 0.000 0.000 -53.060
Traceless
 xyz
x -1.613 0.000 0.000
y 0.000 12.588 0.000
z 0.000 0.000 -10.975
Polar
3z2-r2-21.950
x2-y2-9.467
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.388 0.000 0.000
y 0.000 12.053 0.000
z 0.000 0.000 12.687


<r2> (average value of r2) Å2
<r2> 257.467
(<r2>)1/2 16.046