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

using model chemistry: CISD/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 CISD/6-31G*
 hartrees
Energy at 0K-231.224176
Energy at 298.15K 
HF Energy-230.564993
Nuclear repulsion energy209.786911
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 CISD/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 3351 3102 6.85      
2 A1 3237 2997 36.69      
3 A1 1737 1608 0.15      
4 A1 1270 1175 4.05      
5 A1 1117 1034 1.02      
6 A1 1016 940 13.10      
7 A1 935 865 0.04      
8 A1 868 804 74.79      
9 A1 412 382 4.04      
10 A2 3316 3070 0.00      
11 A2 1393 1290 0.00      
12 A2 1293 1197 0.00      
13 A2 1025 949 0.00      
14 A2 983 910 0.00      
15 A2 826 765 0.00      
16 A2 346 321 0.00      
17 B1 3348 3099 41.11      
18 B1 1709 1582 6.29      
19 B1 1320 1222 4.49      
20 B1 1172 1085 0.04      
21 B1 1072 993 0.35      
22 B1 774 717 42.96      
23 B2 3318 3071 25.48      
24 B2 3229 2990 19.24      
25 B2 1383 1280 37.20      
26 B2 1251 1158 5.99      
27 B2 1013 938 3.82      
28 B2 982 909 7.42      
29 B2 894 828 8.05      
30 B2 522 483 7.05      

Unscaled Zero Point Vibrational Energy (zpe) 22555.1 cm-1
Scaled (by 0.9258) Zero Point Vibrational Energy (zpe) 20881.5 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 CISD/6-31G*
ABC
0.26493 0.15029 0.11743

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.780 0.521
C2 0.000 -0.780 0.521
H3 0.000 1.342 1.451
H4 0.000 -1.342 1.451
C5 -1.298 0.666 -0.264
C6 1.298 0.666 -0.264
C7 1.298 -0.666 -0.264
C8 -1.298 -0.666 -0.264
H9 -1.941 1.412 -0.707
H10 1.941 1.412 -0.707
H11 1.941 -1.412 -0.707
H12 -1.941 -1.412 -0.707

Atom - Atom Distances (Å)
  C1 C2 H3 H4 C5 C6 C7 C8 H9 H10 H11 H12
C11.55911.08712.31681.52121.52122.09502.09502.38192.38193.17423.1742
C21.55912.31681.08712.09502.09501.52121.52123.17423.17422.38192.3819
H31.08712.31682.68492.25492.25492.94252.94252.90302.90304.00104.0010
H42.31681.08712.68492.94252.94252.25492.25494.00104.00102.90302.9030
C51.52122.09502.25492.94252.59592.91731.33111.07983.35283.87292.2190
C61.52122.09502.25492.94252.59591.33112.91733.35281.07982.21903.8729
C72.09501.52122.94252.25492.91731.33112.59593.87292.21901.07983.3528
C82.09501.52122.94252.25491.33112.91732.59592.21903.87293.35281.0798
H92.38193.17422.90304.00101.07983.35283.87292.21903.88134.79962.8234
H102.38193.17422.90304.00103.35281.07982.21903.87293.88132.82344.7996
H113.17422.38194.00102.90303.87292.21901.07983.35284.79962.82343.8813
H123.17422.38194.00102.90302.21903.87293.35281.07982.82344.79963.8813

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 121.187 C1 C2 H7 85.702
C1 C2 H8 85.702 C1 C5 H8 94.298
C1 C5 H9 131.892 C1 C6 H7 94.298
C1 C6 H10 131.892 C2 C1 C3 121.187
C2 C1 C5 85.702 C2 C1 C6 85.702
C2 H7 C6 94.298 C2 H7 H11 131.892
C2 H8 C5 94.298 C2 H8 H12 131.892
C3 C1 C5 118.706 C3 C1 C6 118.706
C4 C2 H7 118.706 C4 C2 H8 118.706
C5 C1 C6 117.133 C5 H8 H12 133.712
C6 H7 H11 133.712 H7 C6 H10 133.712
H8 C5 H9 133.712
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability