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 (Benzvalene)

using model chemistry: MP2/6-31G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at MP2/6-31G**
 hartrees
Energy at 0K-231.387481
Energy at 298.15K-231.393930
HF Energy-230.580780
Nuclear repulsion energy214.607958
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 MP2/6-31G**
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 3335 3123 6.97      
2 A1 3319 3109 5.55      
3 A1 3277 3069 1.67      
4 A1 1622 1519 2.60      
5 A1 1446 1354 0.04      
6 A1 1227 1149 1.28      
7 A1 1137 1065 1.63      
8 A1 1016 952 0.32      
9 A1 934 875 0.06      
10 A1 789 739 2.30      
11 A1 695 651 5.57      
12 A2 1159 1086 0.00      
13 A2 933 873 0.00      
14 A2 855 801 0.00      
15 A2 807 756 0.00      
16 A2 547 512 0.00      
17 B1 3302 3093 7.51      
18 B1 1156 1083 23.31      
19 B1 1023 958 0.00      
20 B1 779 730 80.37      
21 B1 627 587 1.34      
22 B1 523 490 11.84      
23 B2 3310 3100 3.78      
24 B2 3277 3069 19.38      
25 B2 1381 1294 4.65      
26 B2 1308 1225 2.97      
27 B2 1266 1185 0.93      
28 B2 1026 961 0.13      
29 B2 888 832 5.59      
30 B2 838 785 5.30      

Unscaled Zero Point Vibrational Energy (zpe) 21900.9 cm-1
Scaled (by 0.9365) Zero Point Vibrational Energy (zpe) 20510.2 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 MP2/6-31G**
ABC
0.24810 0.17687 0.13049

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/6-31G**

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.726 0.000 -1.004
C2 -0.726 0.000 -1.004
C3 0.000 1.070 -0.203
C4 0.000 -1.070 -0.203
C5 0.000 0.673 1.247
C6 0.000 -0.673 1.247
H7 1.473 0.000 -1.781
H8 -1.473 0.000 -1.781
H9 0.000 2.097 -0.545
H10 0.000 -2.097 -0.545
H11 0.000 1.350 2.087
H12 0.000 -1.350 2.087

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 C6 H7 H8 H9 H10 H11 H12
C11.45271.52171.52172.45942.45941.07792.33292.26612.26613.45043.4504
C21.45271.52171.52172.45942.45942.33291.07792.26612.26613.45043.4504
C31.52171.52172.14061.50302.26762.41012.41011.08193.18552.30663.3317
C41.52171.52172.14062.26761.50302.41012.41013.18551.08193.33172.3066
C52.45942.45941.50302.26761.34673.43443.43442.28833.29901.07862.1908
C62.45942.45942.26761.50301.34673.43443.43443.29902.28832.19081.0786
H71.07792.33292.41012.41013.43443.43442.94672.84542.84544.35394.3539
H82.33291.07792.41012.41013.43443.43442.94672.84542.84544.35394.3539
H92.26612.26611.08193.18552.28833.29902.84542.84544.19352.73554.3366
H102.26612.26613.18551.08193.29902.28832.84542.84544.19354.33662.7355
H113.45043.45042.30663.33171.07862.19084.35394.35392.73554.33662.7000
H123.45043.45043.33172.30662.19081.07864.35394.35394.33662.73552.7000

picture of Benzvalene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C3 61.490 C1 C2 C4 61.490
C1 C2 H8 133.866 C1 C3 C2 57.020
C1 C3 C5 108.799 C1 C3 H9 120.051
C1 C4 C2 57.020 C1 C4 C6 108.799
C1 C4 H10 120.051 C2 C1 C3 61.490
C2 C1 C4 61.490 C2 C1 H7 133.866
C2 C3 C5 108.799 C2 C3 H9 120.051
C2 C4 C6 108.799 C2 C4 H10 120.051
C3 C1 C4 89.395 C3 C1 H7 135.277
C3 C2 C4 89.395 C3 C2 H8 135.277
C3 C5 C6 105.315 C3 C5 H11 125.830
C4 C1 H7 135.277 C4 C2 H8 135.277
C4 C6 C5 105.315 C4 C6 H12 125.830
C5 C3 H9 123.744 C5 C6 H12 128.855
C6 C4 H10 123.744 C6 C5 H11 128.855
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability