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All results from a given calculation for C6H6 (Dewar Benzene)

using model chemistry: MP2/CEP-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at MP2/CEP-31G*
 hartrees
Energy at 0K-36.993671
Energy at 298.15K 
HF Energy-36.273892
Nuclear repulsion energy104.295526
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 MP2/CEP-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 A1 3238 3074 7.44 190.97 0.04 0.07
2 A1 3150 2991 35.30 120.89 0.11 0.19
3 A1 1584 1504 0.27 13.09 0.05 0.10
4 A1 1182 1122 5.50 23.93 0.12 0.21
5 A1 1041 988 0.83 6.02 0.53 0.69
6 A1 978 929 9.32 11.54 0.21 0.35
7 A1 882 837 0.08 5.17 0.75 0.86
8 A1 818 776 113.18 7.26 0.10 0.19
9 A1 385 365 7.48 6.64 0.60 0.75
10 A2 3196 3034 0.00 96.45 0.75 0.86
11 A2 1299 1234 0.00 7.05 0.75 0.86
12 A2 1198 1137 0.00 6.01 0.75 0.86
13 A2 978 928 0.00 0.28 0.75 0.86
14 A2 893 848 0.00 3.60 0.75 0.86
15 A2 770 731 0.00 5.78 0.75 0.86
16 A2 308 292 0.00 3.32 0.75 0.86
17 B1 3235 3072 39.55 64.38 0.75 0.86
18 B1 1557 1479 10.31 1.05 0.75 0.86
19 B1 1231 1168 3.97 0.03 0.75 0.86
20 B1 1109 1053 0.87 1.56 0.75 0.86
21 B1 1023 971 0.01 4.41 0.75 0.86
22 B1 724 687 68.43 1.03 0.75 0.86
23 B2 3198 3037 22.48 24.35 0.75 0.86
24 B2 3141 2982 13.62 87.22 0.75 0.86
25 B2 1291 1226 34.50 0.06 0.75 0.86
26 B2 1150 1092 5.25 0.35 0.75 0.86
27 B2 930 883 3.12 5.53 0.75 0.86
28 B2 912 866 11.46 0.80 0.75 0.86
29 B2 832 790 11.51 0.00 0.75 0.86
30 B2 471 447 3.60 5.44 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 21350.7 cm-1
Scaled (by 0.9494) Zero Point Vibrational Energy (zpe) 20270.4 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 MP2/CEP-31G*
ABC
0.25138 0.14694 0.11405

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/CEP-31G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.793 0.536
C2 0.000 -0.793 0.536
H3 0.000 1.357 1.484
H4 0.000 -1.357 1.484
C5 -1.310 0.689 -0.270
C6 1.310 0.689 -0.270
C7 1.310 -0.689 -0.270
C8 -1.310 -0.689 -0.270
H9 -1.953 1.448 -0.732
H10 1.953 1.448 -0.732
H11 1.953 -1.448 -0.732
H12 -1.953 -1.448 -0.732

Atom - Atom Distances (Å)
  C1 C2 H3 H4 C5 C6 C7 C8 H9 H10 H11 H12
C11.58661.10332.35021.54141.54142.13622.13622.41852.41853.23153.2315
C21.58662.35021.10332.13622.13621.54141.54143.23153.23152.41852.4185
H31.10332.35022.71402.28882.28882.99672.99672.95522.95524.07324.0732
H42.35021.10332.71402.99672.99672.28882.28884.07324.07322.95522.9552
C51.54142.13622.28882.99672.61982.96051.37881.09633.38153.92762.2790
C61.54142.13622.28882.99672.61981.37882.96053.38151.09632.27903.9276
C72.13621.54142.99672.28882.96051.37882.61983.92762.27901.09633.3815
C82.13621.54142.99672.28881.37882.96052.61982.27903.92763.38151.0963
H92.41853.23152.95524.07321.09633.38153.92762.27903.90584.86192.8953
H102.41853.23152.95524.07323.38151.09632.27903.92763.90582.89534.8619
H113.23152.41854.07322.95523.92762.27901.09633.38154.86192.89533.9058
H123.23152.41854.07322.95522.27903.92763.38151.09632.89534.86193.9058

picture of Dewar Benzene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C4 120.724 C1 C2 H7 86.135
C1 C2 H8 86.135 C1 C5 H8 93.865
C1 C5 H9 132.228 C1 C6 H7 93.865
C1 C6 H10 132.228 C2 C1 C3 120.724
C2 C1 C5 86.135 C2 C1 C6 86.135
C2 H7 C6 93.865 C2 H7 H11 132.228
C2 H8 C5 93.865 C2 H8 H12 132.228
C3 C1 C5 118.932 C3 C1 C6 118.932
C4 C2 H7 118.932 C4 C2 H8 118.932
C5 C1 C6 116.390 C5 H8 H12 133.764
C6 H7 H11 133.764 H7 C6 H10 133.764
H8 C5 H9 133.764
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability