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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-306.548337
Energy at 298.15K-306.554888
HF Energy-305.550135
Nuclear repulsion energy268.494626
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 3281 3076 0.24      
2 A1 3243 3041 6.52      
3 A1 3087 2895 14.55      
4 A1 1849 1734 193.84      
5 A1 1759 1649 2.94      
6 A1 1515 1420 7.25      
7 A1 1457 1366 1.36      
8 A1 1225 1148 3.44      
9 A1 981 920 2.84      
10 A1 907 850 5.73      
11 A1 788 739 2.36      
12 A1 507 476 1.66      
13 A2 1243 1165 0.00      
14 A2 1001 938 0.00      
15 A2 754 707 0.00      
16 A2 350 328 0.00      
17 B1 3116 2922 12.23      
18 B1 1026 962 8.69      
19 B1 975 914 8.53      
20 B1 820 769 50.04      
21 B1 574 538 12.02      
22 B1 274 257 2.47      
23 B1 113 106 1.44      
24 B2 3279 3074 17.21      
25 B2 3242 3040 16.68      
26 B2 1737 1629 1.55      
27 B2 1473 1381 34.74      
28 B2 1434 1345 2.97      
29 B2 1318 1236 26.78      
30 B2 1175 1102 6.98      
31 B2 1022 958 4.20      
32 B2 585 549 0.19      
33 B2 458 430 15.77      

Unscaled Zero Point Vibrational Energy (zpe) 23284.6 cm-1
Scaled (by 0.9376) Zero Point Vibrational Energy (zpe) 21831.7 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
0.17388 0.08896 0.05948

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 -1.827
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 2.178 0.906
H9 0.000 -2.178 0.906
H10 0.000 2.195 -1.553
H11 0.000 -2.195 -1.553
H12 0.869 0.000 -2.496
H13 -0.869 0.000 -2.496

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 C6 O7 H8 H9 H10 H11 H12 H13
C12.94021.48341.48342.46662.46661.22382.18802.18803.45373.45373.71163.7116
C22.94022.50022.50021.50101.50104.16403.49463.49462.21232.21231.09611.0961
C31.48342.50022.52201.34042.85352.36861.08183.48672.10383.93693.21533.2153
C41.48342.50022.52202.85351.34042.36863.48671.08183.93692.10383.21533.2153
C52.46661.50101.34042.85352.51623.57412.12383.93341.08403.49612.13272.1327
C62.46661.50102.85351.34042.51623.57413.93342.12383.49611.08402.13272.1327
O71.22384.16402.36862.36863.57413.57412.60632.60634.46674.46674.90984.9098
H82.18803.49461.08183.48672.12383.93342.60634.35632.45885.01724.13114.1311
H92.18803.49463.48671.08183.93342.12382.60634.35635.01722.45884.13114.1311
H103.45372.21232.10383.93691.08403.49614.46672.45885.01724.39062.54212.5421
H113.45372.21233.93692.10383.49611.08404.46675.01722.45884.39062.54212.5421
H123.71161.09613.21533.21532.13272.13274.90984.13114.13112.54212.54211.7377
H133.71161.09613.21533.21532.13272.13274.90984.13114.13112.54212.54211.7377

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 121.656 C1 C3 H8 116.188
C1 C4 C6 121.656 C1 C4 H9 116.188
C2 C5 C3 123.174 C2 C5 H10 116.788
C2 C6 C4 123.174 C2 C6 H11 116.788
C3 C1 C4 116.439 C3 C1 O7 121.780
C3 C5 H10 120.038 C4 C1 O7 121.780
C4 C6 H11 120.038 C5 C2 C6 113.900
C5 C2 H12 109.422 C5 C2 H13 109.422
C5 C3 H8 122.156 C6 C2 H12 109.422
C6 C2 H13 109.422 C6 C4 H9 122.156
H12 C2 H13 104.864
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability