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

using model chemistry: QCISD/Def2TZVPP

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/Def2TZVPP
 hartrees
Energy at 0K-231.636431
Energy at 298.15K 
HF Energy-230.647840
Nuclear repulsion energy208.914621
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/Def2TZVPP
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 3246 3246 6.38      
2 A1 3152 3152 27.79      
3 A1 1630 1630 0.08      
4 A1 1198 1198 3.92      
5 A1 1058 1058 1.49      
6 A1 967 967 8.81      
7 A1 879 879 0.21      
8 A1 828 828 73.30      
9 A1 392 392 4.48      
10 A2 3213 3213 0.00      
11 A2 1320 1320 0.00      
12 A2 1221 1221 0.00      
13 A2 975 975 0.00      
14 A2 942 942 0.00      
15 A2 794 794 0.00      
16 A2 333 333 0.00      
17 B1 3244 3244 31.89      
18 B1 1605 1605 10.50      
19 B1 1245 1245 3.87      
20 B1 1119 1119 0.13      
21 B1 1023 1023 0.37      
22 B1 737 737 44.12      
23 B2 3214 3214 21.73      
24 B2 3144 3144 15.03      
25 B2 1321 1321 35.01      
26 B2 1181 1181 6.20      
27 B2 971 971 3.53      
28 B2 942 942 5.22      
29 B2 854 854 9.56      
30 B2 498 498 5.21      

Unscaled Zero Point Vibrational Energy (zpe) 21621.1 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 21621.1 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/Def2TZVPP
ABC
0.26133 0.14960 0.11670

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD/Def2TZVPP

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.786 0.527
C2 0.000 -0.786 0.527
H3 0.000 1.348 1.456
H4 0.000 -1.348 1.456
C5 -1.300 0.670 -0.266
C6 1.300 0.670 -0.266
C7 1.300 -0.670 -0.266
C8 -1.300 -0.670 -0.266
H9 -1.942 1.415 -0.713
H10 1.942 1.415 -0.713
H11 1.942 -1.415 -0.713
H12 -1.942 -1.415 -0.713

Atom - Atom Distances (Å)
  C1 C2 H3 H4 C5 C6 C7 C8 H9 H10 H11 H12
C11.57231.08642.32821.52681.52682.10692.10692.38842.38843.18673.1867
C21.57232.32821.08642.10692.10691.52681.52683.18673.18672.38842.3884
H31.08642.32822.69702.26162.26162.95472.95472.91222.91224.01444.0144
H42.32821.08642.69702.95472.95472.26162.26164.01444.01442.91222.9122
C51.52682.10692.26162.95472.59992.92511.34051.08053.35653.88082.2276
C61.52682.10692.26162.95472.59991.34052.92513.35651.08052.22763.8808
C72.10691.52682.95472.26162.92511.34052.59993.88082.22761.08053.3565
C82.10691.52682.95472.26161.34052.92512.59992.22763.88083.35651.0805
H92.38843.18672.91224.01441.08053.35653.88082.22763.88434.80642.8307
H102.38843.18672.91224.01443.35651.08052.22763.88083.88432.83074.8064
H113.18672.38844.01442.91223.88082.22761.08053.35654.80642.83073.8843
H123.18672.38844.01442.91222.22763.88083.35651.08052.83074.80643.8843

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 121.175 C1 C2 H7 85.648
C1 C2 H8 85.648 C1 C5 H8 94.352
C1 C5 H9 131.949 C1 C6 H7 94.352
C1 C6 H10 131.949 C2 C1 C3 121.175
C2 C1 C5 85.648 C2 C1 C6 85.648
C2 H7 C6 94.352 C2 H7 H11 131.949
C2 H8 C5 94.352 C2 H8 H12 131.949
C3 C1 C5 118.903 C3 C1 C6 118.903
C4 C2 H7 118.903 C4 C2 H8 118.903
C5 C1 C6 116.729 C5 H8 H12 133.596
C6 H7 H11 133.596 H7 C6 H10 133.596
H8 C5 H9 133.596
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability