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

using model chemistry: CCD/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 CCD/6-31G*
 hartrees
Energy at 0K-306.500476
Energy at 298.15K-306.507028
HF Energy-305.539227
Nuclear repulsion energy268.260359
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 CCD/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 3233 3060 0.20      
2 A1 3197 3026 5.73      
3 A1 3045 2882 11.61      
4 A1 1847 1748 198.95      
5 A1 1755 1661 2.43      
6 A1 1511 1430 10.58      
7 A1 1451 1373 2.03      
8 A1 1226 1161 3.60      
9 A1 985 932 2.69      
10 A1 908 859 6.65      
11 A1 789 747 2.26      
12 A1 508 481 1.78      
13 A2 1243 1176 0.00      
14 A2 989 936 0.00      
15 A2 752 711 0.00      
16 A2 354 335 0.00      
17 B1 3070 2906 10.23      
18 B1 1025 970 10.15      
19 B1 968 916 6.50      
20 B1 827 783 55.67      
21 B1 577 546 16.44      
22 B1 284 269 2.49      
23 B1 116 110 1.41      
24 B2 3232 3059 15.08      
25 B2 3196 3025 16.10      
26 B2 1733 1640 2.21      
27 B2 1469 1390 35.79      
28 B2 1433 1356 1.99      
29 B2 1320 1249 24.41      
30 B2 1177 1114 7.92      
31 B2 1023 969 5.45      
32 B2 587 555 0.25      
33 B2 460 435 15.99      

Unscaled Zero Point Vibrational Energy (zpe) 23143.2 cm-1
Scaled (by 0.9465) Zero Point Vibrational Energy (zpe) 21905.0 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 CCD/6-31G*
ABC
0.17366 0.08887 0.05942

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.113
C2 0.000 0.000 -1.828
C3 0.000 1.261 0.332
C4 0.000 -1.261 0.332
C5 0.000 1.258 -1.009
C6 0.000 -1.258 -1.009
O7 0.000 0.000 2.337
H8 0.000 2.183 0.911
H9 0.000 -2.183 0.911
H10 0.000 2.201 -1.556
H11 0.000 -2.201 -1.556
H12 0.872 0.000 -2.502
H13 -0.872 0.000 -2.502

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 C6 O7 H8 H9 H10 H11 H12 H13
C12.94061.48321.48322.46672.46671.22432.19202.19203.45983.45983.71843.7184
C22.94062.50122.50121.50131.50134.16493.50203.50202.21782.21781.10241.1024
C31.48322.50122.52241.34112.85412.36861.08813.49212.10963.94393.22233.2223
C41.48322.50122.52242.85411.34112.36863.49211.08813.94392.10963.22233.2223
C52.46671.50131.34112.85412.51653.57472.13063.94021.09043.50242.13852.1385
C62.46671.50132.85411.34112.51653.57473.94022.13063.50241.09042.13852.1385
O71.22434.16492.36862.36863.57473.57472.60752.60754.47274.47274.91694.9169
H82.19203.50201.08813.49212.13063.94022.60754.36542.46725.03044.14374.1437
H92.19203.50203.49211.08813.94022.13062.60754.36545.03042.46724.14374.1437
H103.45982.21782.10963.94391.09043.50244.47272.46725.03044.40232.54942.5494
H113.45982.21783.94392.10963.50241.09044.47275.03042.46724.40232.54942.5494
H123.71841.10243.22233.22232.13852.13854.91694.14374.14372.54942.54941.7446
H133.71841.10243.22233.22232.13852.13854.91694.14374.14372.54942.54941.7446

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 121.630 C1 C3 H8 116.123
C1 C4 C6 121.630 C1 C4 H9 116.123
C2 C5 C3 123.185 C2 C5 H10 116.796
C2 C6 C4 123.185 C2 C6 H11 116.796
C3 C1 C4 116.487 C3 C1 O7 121.756
C3 C5 H10 120.019 C4 C1 O7 121.756
C4 C6 H11 120.019 C5 C2 C6 113.883
C5 C2 H12 109.484 C5 C2 H13 109.484
C5 C3 H8 122.246 C6 C2 H12 109.484
C6 C2 H13 109.484 C6 C4 H9 122.246
H12 C2 H13 104.613
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability