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

using model chemistry: B3PW91/TZVP

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes D2H 1Ag
Energy calculated at B3PW91/TZVP
 hartrees
Energy at 0K-430.711995
Energy at 298.15K 
HF Energy-430.711995
Nuclear repulsion energy342.201498
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 B3PW91/TZVP
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 3222 3107 0.00 287.90 0.15 0.26
2 Ag 1665 1605 0.00 5.96 0.70 0.82
3 Ag 1286 1240 0.00 24.63 0.06 0.12
4 Ag 1164 1122 0.00 6.83 0.60 0.75
5 Ag 873 842 0.00 36.03 0.06 0.12
6 Ag 458 442 0.00 5.51 0.43 0.60
7 Au 928 895 0.00 0.00 0.00 0.00
8 Au 423 408 0.00 0.00 0.00 0.00
9 B1g 802 774 0.00 0.03 0.75 0.86
10 B1u 3209 3094 3.56 0.00 0.00 0.00
11 B1u 1547 1492 268.42 0.00 0.00 0.00
12 B1u 1235 1191 194.44 0.00 0.00 0.00
13 B1u 1029 992 3.04 0.00 0.00 0.00
14 B1u 753 726 64.86 0.00 0.00 0.00
15 B2g 872 841 0.00 0.16 0.75 0.86
16 B2g 585 565 0.00 1.65 0.75 0.86
17 B2g 346 334 0.00 2.01 0.75 0.86
18 B2u 3222 3107 0.02 0.00 0.00 0.00
19 B2u 1452 1400 1.02 0.00 0.00 0.00
20 B2u 1351 1302 0.01 0.00 0.00 0.00
21 B2u 1112 1072 13.25 0.00 0.00 0.00
22 B2u 352 340 4.64 0.00 0.00 0.00
23 B3g 3211 3096 0.00 115.61 0.75 0.86
24 B3g 1661 1602 0.00 8.78 0.75 0.86
25 B3g 1304 1258 0.00 1.28 0.75 0.86
26 B3g 648 625 0.00 7.67 0.75 0.86
27 B3g 452 436 0.00 0.07 0.75 0.86
28 B3u 840 810 83.38 0.00 0.00 0.00
29 B3u 514 496 18.36 0.00 0.00 0.00
30 B3u 158 152 1.68 0.00 0.00 0.00

Unscaled Zero Point Vibrational Energy (zpe) 18337.0 cm-1
Scaled (by 0.9643) Zero Point Vibrational Energy (zpe) 17682.4 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 B3PW91/TZVP
ABC
0.18994 0.04771 0.03813

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/TZVP

Point Group is D2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.364
C2 0.000 0.000 -1.364
C3 0.000 1.211 0.694
C4 0.000 -1.211 0.694
C5 0.000 -1.211 -0.694
C6 0.000 1.211 -0.694
F7 0.000 0.000 2.711
F8 0.000 0.000 -2.711
H9 0.000 2.136 1.256
H10 0.000 -2.136 1.256
H11 0.000 -2.136 -1.256
H12 0.000 2.136 -1.256

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 C6 F7 F8 H9 H10 H11 H12
C12.72841.38351.38352.38822.38821.34644.07492.13922.13923.38083.3808
C22.72842.38822.38821.38351.38354.07491.34643.38083.38082.13922.1392
C31.38352.38822.42122.79131.38892.35173.61391.08283.39393.87392.1590
C41.38352.38822.42121.38892.79132.35173.61393.39391.08282.15903.8739
C52.38821.38352.79131.38892.42123.61392.35173.87392.15901.08283.3939
C62.38821.38351.38892.79132.42123.61392.35172.15903.87393.39391.0828
F71.34644.07492.35172.35173.61393.61395.42132.58472.58474.50534.5053
F84.07491.34643.61393.61392.35172.35175.42134.50534.50532.58472.5847
H92.13923.38081.08283.39393.87392.15902.58474.50534.27304.95662.5118
H102.13923.38083.39391.08282.15903.87392.58474.50534.27302.51184.9566
H113.38082.13923.87392.15901.08283.39394.50532.58474.95662.51184.2730
H123.38082.13922.15903.87393.39391.08284.50532.58472.51184.95664.2730

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 118.953 C1 C3 H9 119.813
C1 C4 C5 118.953 C1 C4 H10 119.813
C2 C5 C4 118.953 C2 C5 H11 119.813
C2 C6 C3 118.953 C2 C6 H12 119.813
C3 C1 C4 122.094 C3 C1 F7 118.953
C3 C6 H12 121.234 C4 C1 F7 118.953
C4 C5 H11 121.234 C5 C2 C6 122.094
C5 C2 F8 118.953 C5 C4 H10 121.234
C6 C2 F8 118.953 C6 C3 H9 121.234
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/TZVP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.246      
2 C 0.246      
3 C -0.177      
4 C -0.177      
5 C -0.177      
6 C -0.177      
7 F -0.185      
8 F -0.185      
9 H 0.147      
10 H 0.147      
11 H 0.147      
12 H 0.147      


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 -46.418 0.000 0.000
y 0.000 -36.686 0.000
z 0.000 0.000 -51.959
Traceless
 xyz
x -2.095 0.000 0.000
y 0.000 12.502 0.000
z 0.000 0.000 -10.407
Polar
3z2-r2-20.813
x2-y2-9.732
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.380 0.000 0.000
y 0.000 11.065 0.000
z 0.000 0.000 11.608


<r2> (average value of r2) Å2
<r2> 254.025
(<r2>)1/2 15.938