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: QCISD/6-311+G(3df,2p)

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/6-311+G(3df,2p)
 hartrees
Energy at 0K-231.632290
Energy at 298.15K 
HF Energy-230.642714
Nuclear repulsion energy214.591661
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/6-311+G(3df,2p)
Rotational Constants (cm-1) from geometry optimized at QCISD/6-311+G(3df,2p)
ABC
0.24846 0.17650 0.13038

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD/6-311+G(3df,2p)

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.725 0.000 -1.005
C2 -0.725 0.000 -1.005
C3 0.000 1.071 -0.206
C4 0.000 -1.071 -0.206
C5 0.000 0.669 1.250
C6 0.000 -0.669 1.250
H7 1.478 0.000 -1.777
H8 -1.478 0.000 -1.777
H9 0.000 2.099 -0.544
H10 0.000 -2.099 -0.544
H11 0.000 1.347 2.089
H12 0.000 -1.347 2.089

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 C6 H7 H8 H9 H10 H11 H12
C11.45091.52041.52042.46082.46081.07812.33462.26812.26813.45123.4512
C21.45091.52041.52042.46082.46082.33461.07812.26812.26813.45123.4512
C31.52041.52042.14281.51062.26892.40802.40801.08153.18822.31173.3340
C41.52041.52042.14282.26891.51062.40802.40803.18821.08153.33402.3117
C52.46082.46081.51062.26891.33753.43393.43392.29383.29791.07892.1832
C62.46082.46082.26891.51061.33753.43393.43393.29792.29382.18321.0789
H71.07812.33462.40802.40803.43393.43392.95532.84782.84784.35234.3523
H82.33461.07812.40802.40803.43393.43392.95532.84782.84784.35234.3523
H92.26812.26811.08153.18822.29383.29792.84782.84784.19782.73814.3363
H102.26812.26813.18821.08153.29792.29382.84782.84784.19784.33632.7381
H113.45123.45122.31173.33401.07892.18324.35234.35232.73814.33632.6933
H123.45123.45123.33402.31172.18321.07894.35234.35234.33632.73812.6933

picture of Benzvalene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C3 61.500 C1 C2 C4 61.500
C1 C2 H8 134.243 C1 C3 C2 56.999
C1 C3 C5 108.560 C1 C3 H9 120.375
C1 C4 C2 56.999 C1 C4 C6 108.560
C1 C4 H10 120.375 C2 C1 C3 61.500
C2 C1 C4 61.500 C2 C1 H7 134.243
C2 C3 C5 108.560 C2 C3 H9 120.375
C2 C4 C6 108.560 C2 C4 H10 120.375
C3 C1 C4 89.608 C3 C1 H7 135.161
C3 C2 C4 89.608 C3 C2 H8 135.161
C3 C5 C6 105.458 C3 C5 H11 125.615
C4 C1 H7 135.161 C4 C2 H8 135.161
C4 C6 C5 105.458 C4 C6 H12 125.615
C5 C3 H9 123.639 C5 C6 H12 128.927
C6 C4 H10 123.639 C6 C5 H11 128.927
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability