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

using model chemistry: CCD/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes D2H 1Ag
Energy calculated at CCD/6-31G*
 hartrees
Energy at 0K-429.514162
Energy at 298.15K-429.518841
Nuclear repulsion energy340.757635
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 CCD/6-31G*
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 3255 3081 0.00      
2 Ag 1724 1632 0.00      
3 Ag 1334 1262 0.00      
4 Ag 1193 1129 0.00      
5 Ag 888 841 0.00      
6 Ag 460 435 0.00      
7 Au 911 863 0.00      
8 Au 424 401 0.00      
9 B1g 814 771 0.00      
10 B1u 3241 3068 4.36      
11 B1u 1601 1516 245.58      
12 B1u 1279 1211 137.14      
13 B1u 1051 995 4.12      
14 B1u 761 720 48.46      
15 B2g 868 821 0.00      
16 B2g 566 536 0.00      
17 B2g 376 356 0.00      
18 B2u 3254 3080 1.23      
19 B2u 1486 1407 0.19      
20 B2u 1312 1242 1.72      
21 B2u 1132 1072 12.87      
22 B2u 351 332 5.53      
23 B3g 3243 3069 0.00      
24 B3g 1712 1620 0.00      
25 B3g 1327 1256 0.00      
26 B3g 656 621 0.00      
27 B3g 449 425 0.00      
28 B3u 830 786 96.65      
29 B3u 509 482 7.80      
30 B3u 163 154 1.97      

Unscaled Zero Point Vibrational Energy (zpe) 18584.6 cm-1
Scaled (by 0.9465) Zero Point Vibrational Energy (zpe) 17590.4 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 CCD/6-31G*
ABC
0.18819 0.04734 0.03782

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCD/6-31G*

Point Group is D2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.367
C2 0.000 0.000 -1.367
C3 0.000 1.217 0.697
C4 0.000 -1.217 0.697
C5 0.000 -1.217 -0.697
C6 0.000 1.217 -0.697
F7 0.000 0.000 2.722
F8 0.000 0.000 -2.722
H9 0.000 2.144 1.264
H10 0.000 -2.144 1.264
H11 0.000 -2.144 -1.264
H12 0.000 2.144 -1.264

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 C6 F7 F8 H9 H10 H11 H12
C12.73451.38881.38882.39652.39651.35444.08892.14612.14613.39413.3941
C22.73452.39652.39651.38881.38884.08891.35443.39413.39412.14612.1461
C31.38882.39652.43342.80481.39492.36173.62911.08653.40773.89102.1697
C41.38882.39652.43341.39492.80482.36173.62913.40771.08652.16973.8910
C52.39651.38882.80481.39492.43343.62912.36173.89102.16971.08653.4077
C62.39651.38881.39492.80482.43343.62912.36172.16973.89103.40771.0865
F71.35444.08892.36172.36173.62913.62915.44332.59212.59214.52584.5258
F84.08891.35443.62913.62912.36172.36175.44334.52584.52582.59212.5921
H92.14613.39411.08653.40773.89102.16972.59214.52584.28724.97732.5285
H102.14613.39413.40771.08652.16973.89102.59214.52584.28722.52854.9773
H113.39412.14613.89102.16971.08653.40774.52582.59214.97732.52854.2872
H123.39412.14612.16973.89103.40771.08654.52582.59212.52854.97734.2872

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 118.832 C1 C3 H9 119.723
C1 C4 C5 118.832 C1 C4 H10 119.723
C2 C5 C4 118.832 C2 C5 H11 119.723
C2 C6 C3 118.832 C2 C6 H12 119.723
C3 C1 C4 122.336 C3 C1 F7 118.832
C3 C6 H12 121.445 C4 C1 F7 118.832
C4 C5 H11 121.445 C5 C2 C6 122.336
C5 C2 F8 118.832 C5 C4 H10 121.445
C6 C2 F8 118.832 C6 C3 H9 121.445
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability