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

using model chemistry: CBS-Q

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at CBS-Q
 hartrees
Energy at 0K-306.913971
Energy at 298.15K-306.907303
HF Energy-305.538759
Nuclear repulsion energy270.251308
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 CBS-Q
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 3377 3377 0.33      
2 A1 3339 3339 12.13      
3 A1 3170 3170 22.57      
4 A1 1983 1983 496.36      
5 A1 1872 1872 0.16      
6 A1 1588 1588 5.61      
7 A1 1531 1531 3.28      
8 A1 1286 1286 8.38      
9 A1 1038 1038 3.86      
10 A1 933 933 4.77      
11 A1 818 818 1.95      
12 A1 535 535 3.41      
13 A2 1328 1328 0.00      
14 A2 1118 1118 0.00      
15 A2 822 822 0.00      
16 A2 393 393 0.00      
17 B1 3192 3192 18.61      
18 B1 1142 1142 0.82      
19 B1 1051 1051 32.73      
20 B1 939 939 52.12      
21 B1 635 635 15.24      
22 B1 342 342 2.93      
23 B1 135 135 2.09      
24 B2 3376 3376 22.12      
25 B2 3339 3339 16.38      
26 B2 1837 1837 1.45      
27 B2 1547 1547 30.23      
28 B2 1512 1512 9.11      
29 B2 1378 1378 40.81      
30 B2 1232 1232 9.93      
31 B2 1057 1057 5.42      
32 B2 614 614 0.12      
33 B2 490 490 19.97      

Unscaled Zero Point Vibrational Energy (zpe) 24473.3 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 24473.3 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 CBS-Q
ABC
0.17415 0.08813 0.05914

See section I.F.4 to change rotational constant units
Geometric Data calculated at CBS-Q

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.102
C2 0.000 0.000 -1.808
C3 0.000 1.259 0.330
C4 0.000 -1.259 0.330
C5 0.000 1.256 -0.992
C6 0.000 -1.256 -0.992
O7 0.000 0.000 2.298
H8 0.000 2.171 0.902
H9 0.000 -2.171 0.902
H10 0.000 2.189 -1.532
H11 0.000 -2.189 -1.532
H12 0.864 0.000 -2.476
H13 -0.864 0.000 -2.476

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 C6 O7 H8 H9 H10 H11 H12 H13
C12.91011.47661.47662.44172.44171.19602.18012.18013.42493.42493.68113.6811
C22.91012.48172.48171.49841.49844.10613.47223.47222.20692.20691.09241.0924
C31.47662.48172.51811.32212.84172.33591.07603.47712.08163.91913.19523.1952
C41.47662.48172.51812.84171.32212.33593.47711.07603.91912.08163.19523.1952
C52.44171.49841.32212.84172.51283.52142.10273.91551.07813.48792.12832.1283
C62.44171.49842.84171.32212.51283.52143.91552.10273.48791.07812.12832.1283
O71.19604.10612.33592.33593.52143.52142.58112.58114.41134.41134.85184.8518
H82.18013.47221.07603.47712.10273.91552.58114.34172.43354.99344.10734.1073
H92.18013.47223.47711.07603.91552.10272.58114.34174.99342.43354.10734.1073
H103.42492.20692.08163.91911.07813.48794.41132.43354.99344.37892.53632.5363
H113.42492.20693.91912.08163.48791.07814.41134.99342.43354.37892.53632.5363
H123.68111.09243.19523.19522.12832.12834.85184.10734.10732.53632.53631.7287
H133.68111.09243.19523.19522.12832.12834.85184.10734.10732.53632.53631.7287

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 121.386 C1 C3 H8 116.430
C1 C4 C6 121.386 C1 C4 H9 116.430
C2 C5 C3 123.133 C2 C5 H10 116.922
C2 C6 C4 123.133 C2 C6 H11 116.922
C3 C1 C4 116.999 C3 C1 O7 121.500
C3 C5 H10 119.945 C4 C1 O7 121.500
C4 C6 H11 119.945 C5 C2 C6 113.963
C5 C2 H12 109.465 C5 C2 H13 109.465
C5 C3 H8 122.184 C6 C2 H12 109.465
C6 C2 H13 109.465 C6 C4 H9 122.184
H12 C2 H13 104.600
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability