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

using model chemistry: B2PLYP=FULL/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 B2PLYP=FULL/aug-cc-pVDZ
 hartrees
Energy at 0K-430.406091
Energy at 298.15K 
HF Energy-430.002575
Nuclear repulsion energy339.523194
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/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 3242 3118 0.00 303.88 0.13 0.23
2 Ag 1647 1584 0.00 4.48 0.75 0.86
3 Ag 1259 1211 0.00 34.14 0.06 0.12
4 Ag 1152 1108 0.00 8.65 0.58 0.73
5 Ag 857 825 0.00 40.90 0.05 0.10
6 Ag 450 433 0.00 5.91 0.31 0.48
7 Au 947 911 0.00 0.00 0.69 0.82
8 Au 432 415 0.00 0.00 0.65 0.78
9 B1g 807 777 0.00 0.53 0.75 0.86
10 B1u 3227 3104 3.27 0.00 0.50 0.67
11 B1u 1524 1466 239.26 0.00 0.00 0.00
12 B1u 1203 1157 190.80 0.00 0.49 0.66
13 B1u 1018 979 6.09 0.00 0.00 0.00
14 B1u 735 707 67.13 0.00 0.00 0.00
15 B2g 924 889 0.00 0.01 0.75 0.86
16 B2g 694 667 0.00 0.95 0.75 0.86
17 B2g 371 357 0.00 2.95 0.75 0.86
18 B2u 3241 3117 0.09 0.00 0.36 0.53
19 B2u 1434 1379 0.48 0.00 0.51 0.68
20 B2u 1377 1324 0.00 0.00 0.66 0.80
21 B2u 1098 1056 10.50 0.00 0.70 0.82
22 B2u 344 330 4.73 0.00 0.52 0.68
23 B3g 3230 3106 0.00 118.20 0.75 0.86
24 B3g 1662 1598 0.00 9.25 0.75 0.86
25 B3g 1285 1236 0.00 1.31 0.75 0.86
26 B3g 639 615 0.00 5.38 0.75 0.86
27 B3g 441 424 0.00 0.05 0.75 0.86
28 B3u 848 815 77.74 0.00 0.00 0.00
29 B3u 509 490 19.05 0.00 0.00 0.00
30 B3u 158 152 1.85 0.00 0.00 0.00

Unscaled Zero Point Vibrational Energy (zpe) 18377.1 cm-1
Scaled (by 0.9618) Zero Point Vibrational Energy (zpe) 17675.1 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/aug-cc-pVDZ
ABC
0.18671 0.04702 0.03756

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP=FULL/aug-cc-pVDZ

Point Group is D2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.369
C2 0.000 0.000 -1.369
C3 0.000 1.222 0.700
C4 0.000 -1.222 0.700
C5 0.000 -1.222 -0.700
C6 0.000 1.222 -0.700
F7 0.000 0.000 2.732
F8 0.000 0.000 -2.732
H9 0.000 2.151 1.266
H10 0.000 -2.151 1.266
H11 0.000 -2.151 -1.266
H12 0.000 2.151 -1.266

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 C6 F7 F8 H9 H10 H11 H12
C12.73791.39261.39262.40302.40301.36284.10062.15382.15383.40193.4019
C22.73792.40302.40301.39261.39264.10061.36283.40193.40192.15382.1538
C31.39262.40302.44322.81631.40082.37033.64301.08843.42013.90442.1754
C41.39262.40302.44321.40082.81632.37033.64303.42011.08842.17543.9044
C52.40301.39262.81631.40082.44323.64302.37033.90442.17541.08843.4201
C62.40301.39261.40082.81632.44323.64302.37032.17543.90443.42011.0884
F71.36284.10062.37032.37033.64303.64305.46342.60302.60304.54014.5401
F84.10061.36283.64303.64302.37032.37035.46344.54014.54012.60302.6030
H92.15383.40191.08843.42013.90442.17542.60304.54014.30274.99272.5326
H102.15383.40193.42011.08842.17543.90442.60304.54014.30272.53264.9927
H113.40192.15383.90442.17541.08843.42014.54012.60304.99272.53264.3027
H123.40192.15382.17543.90443.42011.08844.54012.60302.53264.99274.3027

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 118.690 C1 C3 H9 119.983
C1 C4 C5 118.690 C1 C4 H10 119.983
C2 C5 C4 118.690 C2 C5 H11 119.983
C2 C6 C3 118.690 C2 C6 H12 119.983
C3 C1 C4 122.620 C3 C1 F7 118.690
C3 C6 H12 121.327 C4 C1 F7 118.690
C4 C5 H11 121.327 C5 C2 C6 122.620
C5 C2 F8 118.690 C5 C4 H10 121.327
C6 C2 F8 118.690 C6 C3 H9 121.327
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability