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

using model chemistry: MP2=FULL/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=FULL/6-31G*
 hartrees
Energy at 0K-306.498050
Energy at 298.15K-306.504565
HF Energy-305.537756
Nuclear repulsion energy268.524683
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=FULL/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 3252 3064 0.04      
2 A1 3217 3031 4.35      
3 A1 3063 2886 5.93      
4 A1 1760 1659 129.68      
5 A1 1701 1603 16.09      
6 A1 1502 1415 15.85      
7 A1 1446 1363 2.27      
8 A1 1224 1153 4.31      
9 A1 979 923 3.46      
10 A1 912 859 8.84      
11 A1 791 746 1.83      
12 A1 506 477 1.70      
13 A2 1234 1163 0.00      
14 A2 983 926 0.00      
15 A2 753 710 0.00      
16 A2 350 329 0.00      
17 B1 3094 2915 5.76      
18 B1 1011 953 9.46      
19 B1 969 913 6.95      
20 B1 821 774 52.35      
21 B1 570 538 17.53      
22 B1 274 259 2.80      
23 B1 117 110 0.98      
24 B2 3251 3063 11.91      
25 B2 3216 3031 13.82      
26 B2 1689 1591 4.70      
27 B2 1464 1379 40.45      
28 B2 1425 1342 0.55      
29 B2 1316 1240 23.00      
30 B2 1175 1107 8.46      
31 B2 1026 967 6.21      
32 B2 583 549 0.68      
33 B2 452 426 15.11      

Unscaled Zero Point Vibrational Energy (zpe) 23063.4 cm-1
Scaled (by 0.9422) Zero Point Vibrational Energy (zpe) 21730.3 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=FULL/6-31G*
ABC
0.17533 0.08866 0.05952

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.108
C2 0.000 0.000 -1.825
C3 0.000 1.253 0.333
C4 0.000 -1.253 0.333
C5 0.000 1.253 -1.013
C6 0.000 -1.253 -1.013
O7 0.000 0.000 2.345
H8 0.000 2.175 0.907
H9 0.000 -2.175 0.907
H10 0.000 2.196 -1.556
H11 0.000 -2.196 -1.556
H12 0.869 0.000 -2.500
H13 -0.869 0.000 -2.500

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 C6 O7 H8 H9 H10 H11 H12 H13
C12.93251.47341.47342.46302.46301.23712.18442.18443.45273.45273.71103.7110
C22.93252.49472.49471.49321.49324.16953.49203.49202.21262.21261.10081.1008
C31.47342.49472.50591.34522.84432.37051.08663.47602.11133.93263.21703.2170
C41.47342.49472.50592.84431.34522.37053.47601.08663.93262.11133.21703.2170
C52.46301.49321.34522.84432.50613.58372.12983.92921.08873.49192.13032.1303
C62.46301.49322.84431.34522.50613.58373.92922.12983.49191.08872.13032.1303
O71.23714.16952.37052.37053.58373.58372.60732.60734.47694.47694.92224.9222
H82.18443.49201.08663.47602.12983.92922.60734.35032.46365.01784.13474.1347
H92.18443.49203.47601.08663.92922.12982.60734.35035.01782.46364.13474.1347
H103.45272.21262.11133.93261.08873.49194.47692.46365.01784.39252.54362.5436
H113.45272.21263.93262.11133.49191.08874.47695.01782.46364.39252.54362.5436
H123.71101.10083.21703.21702.13032.13034.92224.13474.13472.54362.54361.7386
H133.71101.10083.21703.21702.13032.13034.92224.13474.13472.54362.54361.7386

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 121.750 C1 C3 H8 116.327
C1 C4 C6 121.750 C1 C4 H9 116.327
C2 C5 C3 122.940 C2 C5 H10 117.094
C2 C6 C4 122.940 C2 C6 H11 117.094
C3 C1 C4 116.509 C3 C1 O7 121.745
C3 C5 H10 119.965 C4 C1 O7 121.745
C4 C6 H11 119.965 C5 C2 C6 114.111
C5 C2 H12 109.489 C5 C2 H13 109.489
C5 C3 H8 121.923 C6 C2 H12 109.489
C6 C2 H13 109.489 C6 C4 H9 121.923
H12 C2 H13 104.318
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability