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

using model chemistry: CID/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 CID/6-31G*
 hartrees
Energy at 0K-429.289727
Energy at 298.15K-429.294741
Nuclear repulsion energy343.407103
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 CID/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 3366 3109 0.00      
2 Ag 1795 1658 0.00      
3 Ag 1384 1278 0.00      
4 Ag 1235 1140 0.00      
5 Ag 922 852 0.00      
6 Ag 477 441 0.00      
7 Au 1004 927 0.00      
8 Au 453 418 0.00      
9 B1g 875 808 0.00      
10 B1u 3351 3095 4.44      
11 B1u 1662 1535 277.93      
12 B1u 1329 1227 159.57      
13 B1u 1087 1004 4.42      
14 B1u 788 728 53.67      
15 B2g 957 884 0.00      
16 B2g 674 623 0.00      
17 B2g 401 370 0.00      
18 B2u 3365 3108 0.92      
19 B2u 1542 1425 0.16      
20 B2u 1326 1225 2.16      
21 B2u 1169 1080 14.61      
22 B2u 365 337 5.61      
23 B3g 3353 3097 0.00      
24 B3g 1780 1644 0.00      
25 B3g 1380 1275 0.00      
26 B3g 681 629 0.00      
27 B3g 468 432 0.00      
28 B3u 900 831 104.77      
29 B3u 547 505 8.69      
30 B3u 172 159 2.21      

Unscaled Zero Point Vibrational Energy (zpe) 19401.8 cm-1
Scaled (by 0.9237) Zero Point Vibrational Energy (zpe) 17921.4 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 CID/6-31G*
ABC
0.19120 0.04805 0.03840

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

Point Group is D2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.360
C2 0.000 0.000 -1.360
C3 0.000 1.207 0.692
C4 0.000 -1.207 0.692
C5 0.000 -1.207 -0.692
C6 0.000 1.207 -0.692
F7 0.000 0.000 2.701
F8 0.000 0.000 -2.701
H9 0.000 2.127 1.253
H10 0.000 -2.127 1.253
H11 0.000 -2.127 -1.253
H12 0.000 2.127 -1.253

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 C6 F7 F8 H9 H10 H11 H12
C12.71971.37921.37922.38102.38101.34074.06042.12962.12963.36933.3693
C22.71972.38102.38101.37921.37924.06041.34073.36933.36932.12962.1296
C31.37922.38102.41402.78311.38492.34293.60131.07743.38083.86022.1522
C41.37922.38102.41401.38492.78312.34293.60133.38081.07742.15223.8602
C52.38101.37922.78311.38492.41403.60132.34293.86022.15221.07743.3808
C62.38101.37921.38492.78312.41403.60132.34292.15223.86023.38081.0774
F71.34074.06042.34292.34293.60133.60135.40112.57272.57274.48964.4896
F84.06041.34073.60133.60132.34292.34295.40114.48964.48962.57272.5727
H92.12963.36931.07743.38083.86022.15222.57274.48964.25394.93742.5064
H102.12963.36933.38081.07742.15223.86022.57274.48964.25392.50644.9374
H113.36932.12963.86022.15221.07743.38084.48962.57274.93742.50644.2539
H123.36932.12962.15223.86023.38081.07744.48962.57272.50644.93744.2539

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 118.939 C1 C3 H9 119.698
C1 C4 C5 118.939 C1 C4 H10 119.698
C2 C5 C4 118.939 C2 C5 H11 119.698
C2 C6 C3 118.939 C2 C6 H12 119.698
C3 C1 C4 122.122 C3 C1 F7 118.939
C3 C6 H12 121.363 C4 C1 F7 118.939
C4 C5 H11 121.363 C5 C2 C6 122.122
C5 C2 F8 118.939 C5 C4 H10 121.363
C6 C2 F8 118.939 C6 C3 H9 121.363
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability