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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-36.640169
Energy at 298.15K 
HF Energy-36.160108
Nuclear repulsion energy102.327682
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 3218 3109 10.53 206.75 0.03 0.07
2 A1 3124 3019 58.35 120.16 0.12 0.22
3 A1 1513 1462 0.03 9.84 0.03 0.07
4 A1 1142 1104 3.94 28.50 0.11 0.20
5 A1 1035 1000 1.76 6.47 0.73 0.85
6 A1 942 910 23.05 11.65 0.13 0.22
7 A1 834 806 4.84 9.30 0.63 0.78
8 A1 809 782 109.43 11.24 0.08 0.15
9 A1 383 370 7.60 8.30 0.59 0.74
10 A2 3166 3059 0.00 99.65 0.75 0.86
11 A2 1269 1227 0.00 3.75 0.75 0.86
12 A2 1205 1164 0.00 8.51 0.75 0.86
13 A2 944 913 0.00 0.34 0.75 0.86
14 A2 871 842 0.00 3.55 0.75 0.86
15 A2 776 749 0.00 7.95 0.75 0.86
16 A2 314 304 0.00 3.58 0.75 0.86
17 B1 3214 3106 65.49 68.24 0.75 0.86
18 B1 1487 1437 11.20 1.12 0.75 0.86
19 B1 1214 1173 2.14 0.26 0.75 0.86
20 B1 1092 1055 1.98 1.08 0.75 0.86
21 B1 1006 972 0.87 7.02 0.75 0.86
22 B1 738 713 71.10 0.91 0.75 0.86
23 B2 3168 3061 38.95 22.24 0.75 0.86
24 B2 3112 3007 18.31 92.68 0.75 0.86
25 B2 1277 1234 29.30 0.04 0.75 0.86
26 B2 1144 1106 8.17 0.32 0.75 0.86
27 B2 930 899 7.93 1.50 0.75 0.86
28 B2 892 862 0.59 5.78 0.75 0.86
29 B2 813 786 12.27 0.08 0.75 0.86
30 B2 476 460 3.62 6.20 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 21052.9 cm-1
Scaled (by 0.9663) Zero Point Vibrational Energy (zpe) 20343.4 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
0.24289 0.14036 0.10874

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 0.818 0.541
C2 0.000 -0.818 0.541
H3 0.000 1.389 1.492
H4 0.000 -1.389 1.492
C5 -1.345 0.702 -0.273
C6 1.345 0.702 -0.273
C7 1.345 -0.702 -0.273
C8 -1.345 -0.702 -0.273
H9 -1.997 1.460 -0.729
H10 1.997 1.460 -0.729
H11 1.997 -1.460 -0.729
H12 -1.997 -1.460 -0.729

Atom - Atom Distances (Å)
  C1 C2 H3 H4 C5 C6 C7 C8 H9 H10 H11 H12
C11.63591.10872.40271.57651.57652.18642.18642.45192.45193.28463.2846
C21.63592.40271.10872.18642.18641.57651.57653.28463.28462.45192.4519
H31.10872.40272.77772.32282.32283.04843.04842.98702.98704.12714.1271
H42.40271.10872.77773.04843.04842.32282.32284.12714.12712.98702.9870
C51.57652.18642.32283.04842.68933.03331.40311.09903.45654.00552.3032
C61.57652.18642.32283.04842.68931.40313.03333.45651.09902.30324.0055
C72.18641.57653.04842.32283.03331.40312.68934.00552.30321.09903.4565
C82.18641.57653.04842.32281.40313.03332.68932.30324.00553.45651.0990
H92.45193.28462.98704.12711.09903.45654.00552.30323.99344.94702.9199
H102.45193.28462.98704.12713.45651.09902.30324.00553.99342.91994.9470
H113.28462.45194.12712.98704.00552.30321.09903.45654.94702.91993.9934
H123.28462.45194.12712.98702.30324.00553.45651.09902.91994.94703.9934

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 120.992 C1 C2 H7 85.765
C1 C2 H8 85.765 C1 C5 H8 94.235
C1 C5 H9 132.011 C1 C6 H7 94.235
C1 C6 H10 132.011 C2 C1 C3 120.992
C2 C1 C5 85.765 C2 C1 C6 85.765
C2 H7 C6 94.235 C2 H7 H11 132.011
C2 H8 C5 94.235 C2 H8 H12 132.011
C3 C1 C5 118.750 C3 C1 C6 118.750
C4 C2 H7 118.750 C4 C2 H8 118.750
C5 C1 C6 117.070 C5 H8 H12 133.636
C6 H7 H11 133.636 H7 C6 H10 133.636
H8 C5 H9 133.636
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability