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

using model chemistry: MP2=FULL/6-311G*

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/6-311G*
 hartrees
Energy at 0K-306.710940
Energy at 298.15K-306.717380
HF Energy-305.599311
Nuclear repulsion energy268.448291
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/6-311G*
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 3229 3058 0.11      
2 A1 3194 3025 5.87      
3 A1 3049 2888 7.02      
4 A1 1745 1653 151.18      
5 A1 1684 1595 9.31      
6 A1 1470 1392 20.21      
7 A1 1425 1349 3.18      
8 A1 1204 1140 6.22      
9 A1 963 913 3.36      
10 A1 904 856 9.61      
11 A1 782 741 2.12      
12 A1 502 475 1.74      
13 A2 1224 1159 0.00      
14 A2 964 913 0.00      
15 A2 741 702 0.00      
16 A2 344 326 0.00      
17 B1 3078 2916 5.52      
18 B1 983 931 12.66      
19 B1 948 898 11.96      
20 B1 820 777 50.64      
21 B1 558 528 25.44      
22 B1 249 236 2.35      
23 B1 110 105 0.69      
24 B2 3228 3057 15.17      
25 B2 3194 3025 13.22      
26 B2 1665 1577 4.78      
27 B2 1443 1367 40.84      
28 B2 1404 1329 0.69      
29 B2 1294 1225 21.17      
30 B2 1156 1095 9.26      
31 B2 1014 961 8.10      
32 B2 576 546 0.81      
33 B2 448 424 14.38      

Unscaled Zero Point Vibrational Energy (zpe) 22796.9 cm-1
Scaled (by 0.9471) Zero Point Vibrational Energy (zpe) 21590.9 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=FULL/6-311G*
ABC
0.17494 0.08863 0.05946

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/6-311G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.115
C2 0.000 0.000 -1.825
C3 0.000 1.254 0.333
C4 0.000 -1.254 0.333
C5 0.000 1.255 -1.014
C6 0.000 -1.255 -1.014
O7 0.000 0.000 2.342
H8 0.000 2.177 0.906
H9 0.000 -2.177 0.906
H10 0.000 2.200 -1.555
H11 0.000 -2.200 -1.555
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
C12.94001.47771.47772.47102.47101.22772.18742.18743.45903.45903.71743.7174
C22.94002.49612.49611.49441.49444.16773.49283.49282.21622.21621.09981.0998
C31.47772.49612.50791.34692.84752.36861.08663.47892.11143.93583.21733.2173
C41.47772.49612.50792.84751.34692.36863.47891.08663.93582.11143.21733.2173
C52.47101.49441.34692.84752.50983.58322.12973.93261.08863.49662.13012.1301
C62.47101.49442.84751.34692.50983.58323.93262.12973.49661.08862.13012.1301
O71.22774.16772.36862.36863.58323.58322.60872.60874.47514.47514.91944.9194
H82.18743.49281.08663.47892.12973.93262.60874.35492.46065.02124.13434.1343
H92.18743.49283.47891.08663.93262.12972.60874.35495.02122.46064.13434.1343
H103.45902.21622.11143.93581.08863.49664.47512.46065.02124.39922.54672.5467
H113.45902.21623.93582.11143.49661.08864.47515.02122.46064.39922.54672.5467
H123.71741.09983.21733.21732.13012.13014.91944.13434.13432.54672.54671.7376
H133.71741.09983.21733.21732.13012.13014.91944.13434.13432.54672.54671.7376

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 121.979 C1 C3 H8 116.256
C1 C4 C6 121.979 C1 C4 H9 116.256
C2 C5 C3 122.848 C2 C5 H10 117.319
C2 C6 C4 122.848 C2 C6 H11 117.319
C3 C1 C4 116.121 C3 C1 O7 121.940
C3 C5 H10 119.833 C4 C1 O7 121.940
C4 C6 H11 119.833 C5 C2 C6 114.226
C5 C2 H12 109.448 C5 C2 H13 109.448
C5 C3 H8 121.765 C6 C2 H12 109.448
C6 C2 H13 109.448 C6 C4 H9 121.765
H12 C2 H13 104.359
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability