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

using model chemistry: B2PLYP=FULL/Def2TZVPP

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes D2H 1Ag
Energy calculated at B2PLYP=FULL/Def2TZVPP
 hartrees
Energy at 0K-430.631838
Energy at 298.15K 
HF Energy-430.125656
Nuclear repulsion energy342.067106
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 B2PLYP=FULL/Def2TZVPP
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 3237 3237 0.00 287.68 0.14 0.25
2 Ag 1656 1656 0.00 4.68 0.71 0.83
3 Ag 1279 1279 0.00 25.38 0.07 0.13
4 Ag 1167 1167 0.00 7.05 0.62 0.77
5 Ag 869 869 0.00 36.73 0.06 0.11
6 Ag 457 457 0.00 5.39 0.38 0.56
7 Au 969 969 0.00 0.00 0.00 0.00
8 Au 439 439 0.00 0.00 0.00 0.00
9 B1g 821 821 0.00 0.02 0.75 0.86
10 B1u 3223 3223 3.52 0.00 0.00 0.00
11 B1u 1549 1549 241.36 0.00 0.00 0.00
12 B1u 1237 1237 194.42 0.00 0.00 0.00
13 B1u 1033 1033 1.49 0.00 0.00 0.00
14 B1u 752 752 61.98 0.00 0.00 0.00
15 B2g 940 940 0.00 0.06 0.75 0.86
16 B2g 707 707 0.00 0.58 0.75 0.86
17 B2g 379 379 0.00 3.01 0.75 0.86
18 B2u 3236 3236 0.15 0.00 0.16 0.27
19 B2u 1449 1449 0.46 0.00 0.00 0.00
20 B2u 1356 1356 0.12 0.00 0.61 0.76
21 B2u 1111 1111 12.07 0.00 0.48 0.64
22 B2u 349 349 4.29 0.00 0.00 0.00
23 B3g 3225 3225 0.00 113.96 0.75 0.86
24 B3g 1658 1658 0.00 8.23 0.75 0.86
25 B3g 1312 1312 0.00 1.38 0.75 0.86
26 B3g 649 649 0.00 6.56 0.75 0.86
27 B3g 448 448 0.00 0.07 0.75 0.86
28 B3u 862 862 76.54 0.00 0.00 0.00
29 B3u 523 523 18.83 0.00 0.00 0.00
30 B3u 161 161 1.54 0.00 0.00 0.00

Unscaled Zero Point Vibrational Energy (zpe) 18526.9 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 18526.9 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 B2PLYP=FULL/Def2TZVPP
ABC
0.18982 0.04765 0.03809

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP=FULL/Def2TZVPP

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 1.212 0.695
C4 0.000 -1.212 0.695
C5 0.000 -1.212 -0.695
C6 0.000 1.212 -0.695
F7 0.000 0.000 2.712
F8 0.000 0.000 -2.712
H9 0.000 2.133 1.256
H10 0.000 -2.133 1.256
H11 0.000 -2.133 -1.256
H12 0.000 2.133 -1.256

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 C6 F7 F8 H9 H10 H11 H12
C12.72791.38381.38382.38932.38931.34844.07632.13592.13593.37833.3783
C22.72792.38932.38931.38381.38384.07631.34843.37833.37832.13592.1359
C31.38382.38932.42322.79401.39082.35293.61671.07863.39143.87232.1578
C41.38382.38932.42321.39082.79402.35293.61673.39141.07862.15783.8723
C52.38931.38382.79401.39082.42323.61672.35293.87232.15781.07863.3914
C62.38931.38381.39082.79402.42323.61672.35292.15783.87233.39141.0786
F71.34844.07632.35292.35293.61673.61675.42462.58312.58314.50514.5051
F84.07631.34843.61673.61672.35292.35295.42464.50514.50512.58312.5831
H92.13593.37831.07863.39143.87232.15782.58314.50514.26644.95072.5114
H102.13593.37833.39141.07862.15783.87232.58314.50514.26642.51144.9507
H113.37832.13593.87232.15781.07863.39144.50512.58314.95072.51144.2664
H123.37832.13592.15783.87233.39141.07864.50512.58312.51144.95074.2664

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 118.890 C1 C3 H9 119.811
C1 C4 C5 118.890 C1 C4 H10 119.811
C2 C5 C4 118.890 C2 C5 H11 119.811
C2 C6 C3 118.890 C2 C6 H12 119.811
C3 C1 C4 122.220 C3 C1 F7 118.890
C3 C6 H12 121.299 C4 C1 F7 118.890
C4 C5 H11 121.299 C5 C2 C6 122.220
C5 C2 F8 118.890 C5 C4 H10 121.299
C6 C2 F8 118.890 C6 C3 H9 121.299
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability