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

using model chemistry: QCISD/6-31G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at QCISD/6-31G**
 hartrees
Energy at 0K-231.421810
Energy at 298.15K 
HF Energy-230.574637
Nuclear repulsion energy208.533492
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 QCISD/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 A1 3292 3099 8.02      
2 A1 3182 2995 38.01      
3 A1 1657 1559 0.03      
4 A1 1218 1146 2.75      
5 A1 1081 1017 1.36      
6 A1 980 923 7.99      
7 A1 894 841 0.06      
8 A1 828 779 64.18      
9 A1 397 374 3.22      
10 A2 3259 3068 0.00      
11 A2 1348 1269 0.00      
12 A2 1251 1177 0.00      
13 A2 991 933 0.00      
14 A2 916 862 0.00      
15 A2 795 748 0.00      
16 A2 326 307 0.00      
17 B1 3289 3096 43.81      
18 B1 1633 1537 7.03      
19 B1 1275 1201 4.11      
20 B1 1139 1073 0.04      
21 B1 1042 981 0.36      
22 B1 737 694 37.07      
23 B2 3260 3069 27.89      
24 B2 3174 2988 19.26      
25 B2 1344 1265 29.29      
26 B2 1205 1134 5.18      
27 B2 956 900 8.72      
28 B2 933 878 1.48      
29 B2 859 809 5.88      
30 B2 500 470 5.99      

Unscaled Zero Point Vibrational Energy (zpe) 21878.7 cm-1
Scaled (by 0.9414) Zero Point Vibrational Energy (zpe) 20596.6 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 QCISD/6-31G**
ABC
0.26061 0.14902 0.11614

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.786 0.525
C2 0.000 -0.786 0.525
H3 0.000 1.349 1.457
H4 0.000 -1.349 1.457
C5 -1.304 0.673 -0.265
C6 1.304 0.673 -0.265
C7 1.304 -0.673 -0.265
C8 -1.304 -0.673 -0.265
H9 -1.944 1.420 -0.714
H10 1.944 1.420 -0.714
H11 1.944 -1.420 -0.714
H12 -1.944 -1.420 -0.714

Atom - Atom Distances (Å)
  C1 C2 H3 H4 C5 C6 C7 C8 H9 H10 H11 H12
C11.57241.08902.33011.52861.52862.11002.11002.39092.39093.19093.1909
C21.57242.33011.08902.11002.11001.52861.52863.19093.19092.39092.3909
H31.08902.33012.69862.26352.26352.95882.95882.91512.91514.02024.0202
H42.33011.08902.69862.95882.95882.26352.26354.02024.02022.91512.9151
C51.52862.11002.26352.95882.60702.93371.34551.08163.36253.88942.2340
C61.52862.11002.26352.95882.60701.34552.93373.36251.08162.23403.8894
C72.11001.52862.95882.26352.93371.34552.60703.88942.23401.08163.3625
C82.11001.52862.95882.26351.34552.93372.60702.23403.88943.36251.0816
H92.39093.19092.91514.02021.08163.36253.88942.23403.88814.81482.8398
H102.39093.19092.91514.02023.36251.08162.23403.88943.88812.83984.8148
H113.19092.39094.02022.91513.88942.23401.08163.36254.81482.83983.8881
H123.19092.39094.02022.91512.23403.88943.36251.08162.83984.81483.8881

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 121.138 C1 C2 H7 85.743
C1 C2 H8 85.743 C1 C5 H8 94.257
C1 C5 H9 131.929 C1 C6 H7 94.257
C1 C6 H10 131.929 C2 C1 C3 121.138
C2 C1 C5 85.743 C2 C1 C6 85.743
C2 H7 C6 94.257 C2 H7 H11 131.929
C2 H8 C5 94.257 C2 H8 H12 131.929
C3 C1 C5 118.746 C3 C1 C6 118.746
C4 C2 H7 118.746 C4 C2 H8 118.746
C5 C1 C6 117.021 C5 H8 H12 133.693
C6 H7 H11 133.693 H7 C6 H10 133.693
H8 C5 H9 133.693
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability