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All results from a given calculation for C6H6O (2,5-Cyclohexadienone)

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-306.465817
Energy at 298.15K-306.472301
HF Energy-305.537452
Nuclear repulsion energy268.259459
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 3251 3065 0.04      
2 A1 3216 3032 4.39      
3 A1 3063 2888 6.08      
4 A1 1756 1656 127.40      
5 A1 1697 1601 17.47      
6 A1 1502 1416 15.50      
7 A1 1444 1362 2.17      
8 A1 1222 1152 4.25      
9 A1 978 922 3.45      
10 A1 911 859 8.70      
11 A1 790 745 1.83      
12 A1 505 476 1.70      
13 A2 1232 1162 0.00      
14 A2 975 920 0.00      
15 A2 748 705 0.00      
16 A2 346 326 0.00      
17 B1 3093 2917 5.93      
18 B1 1008 950 10.72      
19 B1 964 909 5.03      
20 B1 810 764 53.94      
21 B1 566 533 16.75      
22 B1 269 254 2.67      
23 B1 115 109 1.01      
24 B2 3250 3065 12.09      
25 B2 3215 3032 13.93      
26 B2 1686 1590 4.63      
27 B2 1462 1378 40.59      
28 B2 1423 1342 0.58      
29 B2 1314 1239 23.06      
30 B2 1173 1106 8.35      
31 B2 1025 966 6.14      
32 B2 582 549 0.67      
33 B2 451 425 15.13      

Unscaled Zero Point Vibrational Energy (zpe) 23020.1 cm-1
Scaled (by 0.943) Zero Point Vibrational Energy (zpe) 21707.9 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
0.17493 0.08850 0.05940

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 0.000 0.000 1.109
C2 0.000 0.000 -1.827
C3 0.000 1.255 0.333
C4 0.000 -1.255 0.333
C5 0.000 1.255 -1.014
C6 0.000 -1.255 -1.014
O7 0.000 0.000 2.347
H8 0.000 2.177 0.908
H9 0.000 -2.177 0.908
H10 0.000 2.198 -1.558
H11 0.000 -2.198 -1.558
H12 0.870 0.000 -2.502
H13 -0.870 0.000 -2.502

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 C6 O7 H8 H9 H10 H11 H12 H13
C12.93531.47501.47502.46542.46541.23812.18622.18623.45553.45553.71393.7139
C22.93532.49772.49771.49491.49494.17353.49543.49542.21432.21431.10111.1011
C31.47502.49772.50931.34672.84782.37261.08693.47952.11303.93643.21993.2199
C41.47502.49772.50932.84781.34672.37263.47951.08693.93642.11303.21993.2199
C52.46541.49491.34672.84782.50913.58712.13163.93301.08903.49512.13202.1320
C62.46541.49492.84781.34672.50913.58713.93302.13163.49511.08902.13202.1320
O71.23814.17352.37262.37263.58713.58712.60952.60954.48074.48074.92624.9262
H82.18623.49541.08693.47952.13163.93302.60954.35402.46595.02194.13814.1381
H92.18623.49543.47951.08693.93302.13162.60954.35405.02192.46594.13814.1381
H103.45552.21432.11303.93641.08903.49514.48072.46595.02194.39582.54532.5453
H113.45552.21433.93642.11303.49511.08904.48075.02192.46594.39582.54532.5453
H123.71391.10113.21993.21992.13202.13204.92624.13814.13812.54532.54531.7393
H133.71391.10113.21993.21992.13202.13204.92624.13814.13812.54532.54531.7393

picture of 2,5-Cyclohexadienone state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C3 C5 121.722 C1 C3 H8 116.336
C1 C4 C6 121.722 C1 C4 H9 116.336
C2 C5 C3 122.946 C2 C5 H10 117.081
C2 C6 C4 122.946 C2 C6 H11 117.081
C3 C1 C4 116.550 C3 C1 O7 121.725
C3 C5 H10 119.973 C4 C1 O7 121.725
C4 C6 H11 119.973 C5 C2 C6 114.113
C5 C2 H12 109.484 C5 C2 H13 109.484
C5 C3 H8 121.941 C6 C2 H12 109.484
C6 C2 H13 109.484 C6 C4 H9 121.941
H12 C2 H13 104.338
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability