return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

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

using model chemistry: CCSD/aug-cc-pVDZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at CCSD/aug-cc-pVDZ
 hartrees
Energy at 0K-306.622301
Energy at 298.15K-306.628857
HF Energy-305.577411
Nuclear repulsion energy266.597265
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 CCSD/aug-cc-pVDZ
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 3216 3099 0.10      
2 A1 3179 3063 7.24      
3 A1 3019 2908 14.10      
4 A1 1761 1697 263.96      
5 A1 1700 1637 29.71      
6 A1 1444 1391 11.11      
7 A1 1407 1356 1.43      
8 A1 1186 1143 5.15      
9 A1 958 923 2.98      
10 A1 890 857 7.10      
11 A1 775 746 2.63      
12 A1 495 477 2.04      
13 A2 1210 1166 0.00      
14 A2 983 947 0.00      
15 A2 742 715 0.00      
16 A2 354 341 0.00      
17 B1 3046 2934 6.99      
18 B1 999 963 3.19      
19 B1 947 912 25.09      
20 B1 838 807 34.44      
21 B1 571 550 19.55      
22 B1 297 287 1.92      
23 B1 117 113 1.38      
24 B2 3215 3097 14.77      
25 B2 3178 3062 13.25      
26 B2 1682 1621 1.70      
27 B2 1434 1381 35.21      
28 B2 1389 1338 3.78      
29 B2 1282 1235 22.49      
30 B2 1137 1095 4.76      
31 B2 1000 963 4.12      
32 B2 571 551 0.41      
33 B2 450 434 13.92      

Unscaled Zero Point Vibrational Energy (zpe) 22735.8 cm-1
Scaled (by 0.9634) Zero Point Vibrational Energy (zpe) 21903.7 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 CCSD/aug-cc-pVDZ
ABC
0.17158 0.08775 0.05869

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCSD/aug-cc-pVDZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.121
C2 0.000 0.000 -1.839
C3 0.000 1.269 0.337
C4 0.000 -1.269 0.337
C5 0.000 1.265 -1.017
C6 0.000 -1.265 -1.017
O7 0.000 0.000 2.351
H8 0.000 2.198 0.915
H9 0.000 -2.198 0.915
H10 0.000 2.214 -1.567
H11 0.000 -2.214 -1.567
H12 0.879 0.000 -2.513
H13 -0.879 0.000 -2.513

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 C6 O7 H8 H9 H10 H11 H12 H13
C12.95961.49181.49182.48412.48411.23012.20742.20743.48203.48203.73883.7388
C22.95962.51862.51861.50871.50874.18983.52383.52382.23122.23121.10801.1080
C31.49182.51862.53831.35372.87322.38081.09433.51492.12493.96953.24123.2412
C41.49182.51862.53832.87321.35372.38083.51491.09433.96952.12493.24123.2412
C52.48411.50871.35372.87322.53033.59772.14593.96571.09683.52272.14762.1476
C62.48411.50872.87321.35372.53033.59773.96572.14593.52271.09682.14762.1476
O71.23014.18982.38082.38083.59773.59772.62502.62504.49994.49994.94294.9429
H82.20743.52381.09433.51492.14593.96572.62504.39562.48205.06244.16654.1665
H92.20743.52383.51491.09433.96572.14592.62504.39565.06242.48204.16654.1665
H103.48202.23122.12493.96951.09683.52274.49992.48205.06244.42892.56382.5638
H113.48202.23123.96952.12493.52271.09684.49995.06242.48204.42892.56382.5638
H123.73881.10803.24123.24122.14762.14764.94294.16654.16652.56382.56381.7585
H133.73881.10803.24123.24122.14762.14764.94294.16654.16652.56382.56381.7585

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 121.541 C1 C3 H8 116.352
C1 C4 C6 121.541 C1 C4 H9 116.352
C2 C5 C3 123.175 C2 C5 H10 116.935
C2 C6 C4 123.175 C2 C6 H11 116.935
C3 C1 C4 116.581 C3 C1 O7 121.709
C3 C5 H10 119.889 C4 C1 O7 121.709
C4 C6 H11 119.889 C5 C2 C6 113.986
C5 C2 H12 109.360 C5 C2 H13 109.360
C5 C3 H8 122.107 C6 C2 H12 109.360
C6 C2 H13 109.360 C6 C4 H9 122.107
H12 C2 H13 105.033
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability