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All results from a given calculation for C6H6 (Hexa-1,5-diene-3-yne)

using model chemistry: MP2/CEP-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2H 1Ag
Energy calculated at MP2/CEP-31G*
 hartrees
Energy at 0K-36.989676
Energy at 298.15K-36.993297
HF Energy-36.279477
Nuclear repulsion energy87.271819
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/CEP-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 Ag 3307 3140 0.00      
2 Ag 3211 3049 0.00      
3 Ag 3193 3031 0.00      
4 Ag 2217 2105 0.00      
5 Ag 1648 1565 0.00      
6 Ag 1443 1370 0.00      
7 Ag 1321 1254 0.00      
8 Ag 1079 1024 0.00      
9 Ag 712 676 0.00      
10 Ag 468 444 0.00      
11 Ag 166 158 0.00      
12 Au 1017 966 86.18      
13 Au 890 845 104.56      
14 Au 688 653 19.16      
15 Au 195 185 8.37      
16 Au 38 37 0.07      
17 Bg 1013 962 0.00      
18 Bg 889 844 0.00      
19 Bg 674 640 0.00      
20 Bg 379 360 0.00      
21 Bu 3307 3140 27.48      
22 Bu 3211 3049 36.82      
23 Bu 3193 3031 7.53      
24 Bu 1678 1593 37.44      
25 Bu 1468 1393 6.82      
26 Bu 1319 1252 6.29      
27 Bu 1232 1170 15.58      
28 Bu 1010 959 1.00      
29 Bu 518 492 6.93      
30 Bu 100 95 2.86      

Unscaled Zero Point Vibrational Energy (zpe) 20791.2 cm-1
Scaled (by 0.9494) Zero Point Vibrational Energy (zpe) 19739.2 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/CEP-31G*
ABC
0.81472 0.04363 0.04141

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

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.635 0.000
C2 0.000 -0.635 0.000
C3 0.000 2.083 0.000
C4 0.000 -2.083 0.000
C5 1.156 2.828 0.000
C6 -1.156 -2.828 0.000
H7 -0.973 2.589 0.000
H8 0.973 -2.589 0.000
H9 2.140 2.350 0.000
H10 1.108 3.922 0.000
H11 -2.140 -2.350 0.000
H12 -1.108 -3.922 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 C6 H7 H8 H9 H10 H11 H12
C11.26921.44842.71772.47923.65032.18313.36712.74293.46953.67284.6898
C21.26922.71771.44843.65032.47923.36712.18313.67284.68982.74293.4695
C31.44842.71774.16611.37505.04511.09684.77202.15662.14724.92286.1068
C42.71771.44844.16615.04511.37504.77201.09684.92286.10682.15662.1472
C52.47923.65031.37505.04516.10992.14265.41961.09381.09576.13817.1197
C63.65032.47925.04511.37506.10995.41962.14266.13817.11971.09381.0957
H72.18313.36711.09684.77202.14265.41965.53133.12242.47185.07506.5125
H83.36712.18314.77201.09685.41962.14265.53135.07506.51253.12242.4718
H92.74293.67282.15664.92281.09386.13813.12245.07501.88076.35727.0637
H103.46954.68982.14726.10681.09577.11972.47186.51251.88077.06378.1518
H113.67282.74294.92282.15666.13811.09385.07503.12246.35727.06371.8807
H124.68983.46956.10682.14727.11971.09576.51252.47187.06378.15181.8807

picture of Hexa-1,5-diene-3-yne state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C4 180.000 C1 C3 C5 122.796
C1 C3 H7 117.452 C2 C1 C3 180.000
C2 C4 C6 122.796 C2 C4 H8 117.452
C3 C5 H9 121.321 C3 C5 H10 120.280
C4 C6 H11 121.321 C4 C6 H12 120.280
C5 C3 H7 119.751 C6 C4 H8 119.751
H9 C5 H10 118.398 H11 C6 H12 118.398
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability