return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

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

using model chemistry: MP2/TZVP

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/TZVP
 hartrees
Energy at 0K-231.466922
Energy at 298.15K 
HF Energy-230.631839
Nuclear repulsion energy208.979316
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/TZVP
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 3263 3093 7.43 295.78 0.03 0.06
2 A1 3164 2999 23.72 151.36 0.11 0.20
3 A1 1590 1507 0.13 23.02 0.01 0.02
4 A1 1181 1119 4.12 26.20 0.12 0.22
5 A1 1044 989 2.43 6.46 0.75 0.85
6 A1 966 915 7.02 9.26 0.22 0.36
7 A1 874 829 2.13 5.03 0.73 0.84
8 A1 826 783 77.79 6.34 0.03 0.05
9 A1 401 380 4.84 6.99 0.57 0.73
10 A2 3229 3061 0.00 153.82 0.75 0.86
11 A2 1299 1231 0.00 3.87 0.75 0.86
12 A2 1212 1148 0.00 10.05 0.75 0.86
13 A2 974 923 0.00 0.60 0.75 0.86
14 A2 878 832 0.00 0.89 0.75 0.86
15 A2 772 731 0.00 2.00 0.75 0.86
16 A2 303 288 0.00 1.68 0.75 0.86
17 B1 3261 3091 35.96 60.54 0.75 0.86
18 B1 1566 1485 9.27 0.69 0.75 0.86
19 B1 1222 1158 2.39 1.44 0.75 0.86
20 B1 1117 1058 0.43 0.01 0.75 0.86
21 B1 1024 971 0.12 6.60 0.75 0.86
22 B1 735 697 50.03 2.74 0.75 0.86
23 B2 3231 3063 19.24 43.39 0.75 0.86
24 B2 3156 2992 11.35 108.44 0.75 0.86
25 B2 1312 1243 33.50 0.02 0.75 0.86
26 B2 1168 1107 6.66 0.27 0.75 0.86
27 B2 930 882 7.51 0.05 0.75 0.86
28 B2 901 854 6.25 0.91 0.75 0.86
29 B2 827 784 6.23 0.32 0.75 0.86
30 B2 475 451 4.24 3.37 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 21449.9 cm-1
Scaled (by 0.9479) Zero Point Vibrational Energy (zpe) 20332.4 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/TZVP
ABC
0.26058 0.15037 0.11685

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/TZVP

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.788 0.524
C2 0.000 -0.788 0.524
H3 0.000 1.346 1.458
H4 0.000 -1.346 1.458
C5 -1.297 0.673 -0.265
C6 1.297 0.673 -0.265
C7 1.297 -0.673 -0.265
C8 -1.297 -0.673 -0.265
H9 -1.939 1.422 -0.710
H10 1.939 1.422 -0.710
H11 1.939 -1.422 -0.710
H12 -1.939 -1.422 -0.710

Atom - Atom Distances (Å)
  C1 C2 H3 H4 C5 C6 C7 C8 H9 H10 H11 H12
C11.57541.08862.32961.52191.52192.10622.10622.38372.38373.18773.1877
C21.57542.32961.08862.10622.10621.52191.52193.18773.18772.38372.3837
H31.08862.32962.69272.25902.25902.95412.95412.90932.90934.01504.0150
H42.32961.08862.69272.95412.95412.25902.25904.01504.01502.90932.9093
C51.52192.10622.25902.95412.59312.92151.34581.08213.35043.87962.2354
C61.52192.10622.25902.95412.59311.34582.92153.35041.08212.23543.8796
C72.10621.52192.95412.25902.92151.34582.59313.87962.23541.08213.3504
C82.10621.52192.95412.25901.34582.92152.59312.23543.87963.35041.0821
H92.38373.18772.90934.01501.08213.35043.87962.23543.87734.80812.8432
H102.38373.18772.90934.01503.35041.08212.23543.87963.87732.84324.8081
H113.18772.38374.01502.90933.87962.23541.08213.35044.80812.84323.8773
H123.18772.38374.01502.90932.23543.87963.35041.08212.84324.80813.8773

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 120.875 C1 C2 H7 85.673
C1 C2 H8 85.673 C1 C5 H8 94.327
C1 C5 H9 131.793 C1 C6 H7 94.327
C1 C6 H10 131.793 C2 C1 C3 120.875
C2 C1 C5 85.673 C2 C1 C6 85.673
C2 H7 C6 94.327 C2 H7 H11 131.793
C2 H8 C5 94.327 C2 H8 H12 131.793
C3 C1 C5 118.912 C3 C1 C6 118.912
C4 C2 H7 118.912 C4 C2 H8 118.912
C5 C1 C6 116.846 C5 H8 H12 133.782
C6 H7 H11 133.782 H7 C6 H10 133.782
H8 C5 H9 133.782
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability