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

using model chemistry: mPW1PW91/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 mPW1PW91/TZVP
 hartrees
Energy at 0K-430.773145
Energy at 298.15K 
HF Energy-430.773145
Nuclear repulsion energy342.793479
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 mPW1PW91/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 3240 3091 0.00 283.28 0.15 0.26
2 Ag 1680 1603 0.00 5.77 0.70 0.82
3 Ag 1300 1241 0.00 24.74 0.06 0.12
4 Ag 1170 1116 0.00 6.80 0.61 0.76
5 Ag 880 840 0.00 36.00 0.06 0.12
6 Ag 461 440 0.00 5.38 0.44 0.61
7 Au 936 893 0.00 0.00 0.00 0.00
8 Au 425 406 0.00 0.00 0.00 0.00
9 B1g 810 772 0.00 0.04 0.75 0.86
10 B1u 3226 3078 3.30 0.00 0.00 0.00
11 B1u 1560 1489 277.67 0.00 0.00 0.00
12 B1u 1247 1190 190.19 0.00 0.00 0.00
13 B1u 1035 987 3.23 0.00 0.00 0.00
14 B1u 759 724 63.41 0.00 0.00 0.00
15 B2g 879 838 0.00 0.19 0.75 0.86
16 B2g 588 561 0.00 1.73 0.75 0.86
17 B2g 349 333 0.00 1.93 0.75 0.86
18 B2u 3239 3090 0.00 0.00 0.00 0.00
19 B2u 1462 1395 0.97 0.00 0.00 0.00
20 B2u 1355 1293 0.04 0.00 0.00 0.00
21 B2u 1117 1065 13.34 0.00 0.00 0.00
22 B2u 355 339 4.69 0.00 0.00 0.00
23 B3g 3228 3080 0.00 113.79 0.75 0.86
24 B3g 1676 1599 0.00 8.97 0.75 0.86
25 B3g 1311 1250 0.00 1.28 0.75 0.86
26 B3g 652 622 0.00 7.62 0.75 0.86
27 B3g 455 434 0.00 0.05 0.75 0.86
28 B3u 847 808 83.75 0.00 0.00 0.00
29 B3u 519 495 18.41 0.00 0.00 0.00
30 B3u 159 152 1.68 0.00 0.00 0.00

Unscaled Zero Point Vibrational Energy (zpe) 18459.9 cm-1
Scaled (by 0.954) Zero Point Vibrational Energy (zpe) 17610.8 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 mPW1PW91/TZVP
ABC
0.19051 0.04788 0.03827

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/TZVP

Point Group is D2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.363
C2 0.000 0.000 -1.363
C3 0.000 1.209 0.694
C4 0.000 -1.209 0.694
C5 0.000 -1.209 -0.694
C6 0.000 1.209 -0.694
F7 0.000 0.000 2.705
F8 0.000 0.000 -2.705
H9 0.000 2.133 1.255
H10 0.000 -2.133 1.255
H11 0.000 -2.133 -1.255
H12 0.000 2.133 -1.255

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 C6 F7 F8 H9 H10 H11 H12
C12.72521.38161.38162.38512.38511.34264.06782.13622.13623.37653.3765
C22.72522.38512.38511.38161.38164.06781.34263.37653.37652.13622.1362
C31.38162.38512.41762.78721.38702.34703.60731.08153.38903.86852.1563
C41.38162.38512.41761.38702.78722.34703.60733.38901.08152.15633.8685
C52.38511.38162.78721.38702.41763.60732.34703.86852.15631.08153.3890
C62.38511.38161.38702.78722.41763.60732.34702.15633.86853.38901.0815
F71.34264.06782.34702.34703.60733.60735.41042.57992.57994.49794.4979
F84.06781.34263.60733.60732.34702.34705.41044.49794.49792.57992.5799
H92.13623.37651.08153.38903.86852.15632.57994.49794.26684.94992.5090
H102.13623.37653.38901.08152.15633.86852.57994.49794.26682.50904.9499
H113.37652.13623.86852.15631.08153.38904.49792.57994.94992.50904.2668
H123.37652.13622.15633.86853.38901.08154.49792.57992.50904.94994.2668

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 118.966 C1 C3 H9 119.787
C1 C4 C5 118.966 C1 C4 H10 119.787
C2 C5 C4 118.966 C2 C5 H11 119.787
C2 C6 C3 118.966 C2 C6 H12 119.787
C3 C1 C4 122.069 C3 C1 F7 118.966
C3 C6 H12 121.247 C4 C1 F7 118.966
C4 C5 H11 121.247 C5 C2 C6 122.069
C5 C2 F8 118.966 C5 C4 H10 121.247
C6 C2 F8 118.966 C6 C3 H9 121.247
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/TZVP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.236      
2 C 0.236      
3 C -0.168      
4 C -0.168      
5 C -0.168      
6 C -0.168      
7 F -0.183      
8 F -0.183      
9 H 0.141      
10 H 0.141      
11 H 0.141      
12 H 0.141      


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 -46.421 0.000 0.000
y 0.000 -36.641 0.000
z 0.000 0.000 -51.895
Traceless
 xyz
x -2.153 0.000 0.000
y 0.000 12.517 0.000
z 0.000 0.000 -10.363
Polar
3z2-r2-20.726
x2-y2-9.780
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.347 0.000 0.000
y 0.000 10.981 0.000
z 0.000 0.000 11.481


<r2> (average value of r2) Å2
<r2> 253.218
(<r2>)1/2 15.913