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

using model chemistry: B2PLYP=FULLultrafine/6-31+G**

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=FULLultrafine/6-31+G**
 hartrees
Energy at 0K-430.361091
Energy at 298.15K 
HF Energy-429.974915
Nuclear repulsion energy340.342367
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=FULLultrafine/6-31+G**
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 3263 3263 0.00 296.36 0.15 0.26
2 Ag 1665 1665 0.00 5.38 0.75 0.86
3 Ag 1271 1271 0.00 30.91 0.06 0.12
4 Ag 1173 1173 0.00 8.02 0.56 0.71
5 Ag 867 867 0.00 39.14 0.05 0.10
6 Ag 454 454 0.00 6.08 0.37 0.55
7 Au 943 943 0.00 0.00 0.00 0.00
8 Au 427 427 0.00 0.00 0.00 0.00
9 B1g 810 810 0.00 0.33 0.75 0.86
10 B1u 3249 3249 3.60 0.00 0.00 0.00
11 B1u 1552 1552 241.85 0.00 0.00 0.00
12 B1u 1227 1227 210.29 0.00 0.00 0.00
13 B1u 1034 1034 4.74 0.00 0.00 0.00
14 B1u 742 742 66.72 0.00 0.00 0.00
15 B2g 906 906 0.00 0.02 0.75 0.86
16 B2g 632 632 0.00 1.40 0.75 0.86
17 B2g 369 369 0.00 3.25 0.75 0.86
18 B2u 3262 3262 0.16 0.00 0.00 0.00
19 B2u 1454 1454 0.61 0.00 0.00 0.00
20 B2u 1375 1375 0.01 0.00 0.00 0.00
21 B2u 1116 1116 11.54 0.00 0.00 0.00
22 B2u 345 345 5.28 0.00 0.00 0.00
23 B3g 3251 3251 0.00 121.61 0.75 0.86
24 B3g 1671 1671 0.00 10.04 0.75 0.86
25 B3g 1316 1316 0.00 1.06 0.75 0.86
26 B3g 646 646 0.00 6.82 0.75 0.86
27 B3g 444 444 0.00 0.09 0.75 0.86
28 B3u 842 842 91.28 0.00 0.00 0.00
29 B3u 509 509 17.18 0.00 0.00 0.00
30 B3u 158 158 2.01 0.00 0.00 0.00

Unscaled Zero Point Vibrational Energy (zpe) 18487.6 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 18487.6 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=FULLultrafine/6-31+G**
ABC
0.18768 0.04722 0.03773

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP=FULLultrafine/6-31+G**

Point Group is D2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.365
C2 0.000 0.000 -1.365
C3 0.000 1.219 0.699
C4 0.000 -1.219 0.699
C5 0.000 -1.219 -0.699
C6 0.000 1.219 -0.699
F7 0.000 0.000 2.726
F8 0.000 0.000 -2.726
H9 0.000 2.142 1.262
H10 0.000 -2.142 1.262
H11 0.000 -2.142 -1.262
H12 0.000 2.142 -1.262

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 C6 F7 F8 H9 H10 H11 H12
C12.73011.38931.38932.39672.39671.36124.09132.14472.14473.39013.3901
C22.73012.39672.39671.38931.38934.09131.36123.39013.39012.14472.1447
C31.38932.39672.43792.80981.39712.36593.63521.08183.40823.89142.1674
C41.38932.39672.43791.39712.80982.36593.63523.40821.08182.16743.8914
C52.39671.38932.80981.39712.43793.63522.36593.89142.16741.08183.4082
C62.39671.38931.39712.80982.43793.63522.36592.16743.89143.40821.0818
F71.36124.09132.36592.36593.63523.63525.45242.59462.59464.52754.5275
F84.09131.36123.63523.63522.36592.36595.45244.52754.52752.59462.5946
H92.14473.39011.08183.40823.89142.16742.59464.52754.28454.97302.5247
H102.14473.39013.40821.08182.16743.89142.59464.52754.28452.52474.9730
H113.39012.14473.89142.16741.08183.40824.52752.59464.97302.52474.2845
H123.39012.14472.16743.89143.40821.08184.52752.59462.52474.97304.2845

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 118.670 C1 C3 H9 119.920
C1 C4 C5 118.670 C1 C4 H10 119.920
C2 C5 C4 118.670 C2 C5 H11 119.920
C2 C6 C3 118.670 C2 C6 H12 119.920
C3 C1 C4 122.660 C3 C1 F7 118.670
C3 C6 H12 121.410 C4 C1 F7 118.670
C4 C5 H11 121.410 C5 C2 C6 122.660
C5 C2 F8 118.670 C5 C4 H10 121.410
C6 C2 F8 118.670 C6 C3 H9 121.410
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability