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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-306.545830
Energy at 298.15K-306.552335
HF Energy-305.548547
Nuclear repulsion energy268.735427
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 3285 3069 0.06      
2 A1 3249 3036 4.65      
3 A1 3092 2889 7.97      
4 A1 1763 1647 125.85      
5 A1 1703 1592 16.03      
6 A1 1494 1396 12.37      
7 A1 1446 1351 1.93      
8 A1 1217 1137 4.03      
9 A1 974 910 3.58      
10 A1 910 851 8.08      
11 A1 790 738 1.87      
12 A1 505 471 1.58      
13 A2 1228 1148 0.00      
14 A2 992 927 0.00      
15 A2 753 704 0.00      
16 A2 345 323 0.00      
17 B1 3127 2922 6.84      
18 B1 1009 943 6.67      
19 B1 970 906 10.64      
20 B1 812 759 46.58      
21 B1 566 529 13.49      
22 B1 264 247 2.79      
23 B1 115 108 1.03      
24 B2 3284 3068 13.63      
25 B2 3248 3035 14.13      
26 B2 1691 1580 3.74      
27 B2 1464 1368 40.43      
28 B2 1420 1327 1.35      
29 B2 1310 1224 24.34      
30 B2 1167 1090 7.30      
31 B2 1022 955 5.00      
32 B2 581 543 0.60      
33 B2 451 421 14.88      

Unscaled Zero Point Vibrational Energy (zpe) 23123.0 cm-1
Scaled (by 0.9344) Zero Point Vibrational Energy (zpe) 21606.2 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=FULL/6-31G**
ABC
0.17554 0.08874 0.05957

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 -1.824
C3 0.000 1.253 0.332
C4 0.000 -1.253 0.332
C5 0.000 1.253 -1.013
C6 0.000 -1.253 -1.013
O7 0.000 0.000 2.344
H8 0.000 2.171 0.902
H9 0.000 -2.171 0.902
H10 0.000 2.191 -1.554
H11 0.000 -2.191 -1.554
H12 0.866 0.000 -2.494
H13 -0.866 0.000 -2.494

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 C6 O7 H8 H9 H10 H11 H12 H13
C12.93181.47361.47362.46312.46311.23652.18112.18113.44773.44773.70493.7049
C22.93182.49342.49341.49251.49254.16833.48523.48522.20802.20801.09551.0955
C31.47362.49342.50551.34472.84362.37051.08133.47132.10643.92653.21053.2105
C41.47362.49342.50552.84361.34472.37053.47131.08133.92652.10643.21053.2105
C52.46311.49251.34472.84362.50573.58332.12393.92341.08333.48652.12492.1249
C62.46311.49252.84361.34472.50573.58333.92342.12393.48651.08332.12492.1249
O71.23654.16832.37052.37053.58333.58332.60662.60664.47194.47194.91564.9156
H82.18113.48521.08133.47132.12393.92342.60664.34272.45615.00664.12334.1233
H92.18113.48523.47131.08133.92342.12392.60664.34275.00662.45614.12334.1233
H103.44772.20802.10643.92651.08333.48654.47192.45615.00664.38292.53732.5373
H113.44772.20803.92652.10643.48651.08334.47195.00662.45614.38292.53732.5373
H123.70491.09553.21053.21052.12492.12494.91564.12334.12332.53732.53731.7330
H133.70491.09553.21053.21052.12492.12494.91564.12334.12332.53732.53731.7330

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 121.782 C1 C3 H8 116.390
C1 C4 C6 121.782 C1 C4 H9 116.390
C2 C5 C3 122.915 C2 C5 H10 117.122
C2 C6 C4 122.915 C2 C6 H11 117.122
C3 C1 C4 116.449 C3 C1 O7 121.776
C3 C5 H10 119.964 C4 C1 O7 121.776
C4 C6 H11 119.964 C5 C2 C6 114.158
C5 C2 H12 109.423 C5 C2 H13 109.423
C5 C3 H8 121.829 C6 C2 H12 109.423
C6 C2 H13 109.423 C6 C4 H9 121.829
H12 C2 H13 104.550
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability