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

using model chemistry: CISD/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 CISD/6-31G
 hartrees
Energy at 0K-305.972951
Energy at 298.15K-305.979716
HF Energy-305.412354
Nuclear repulsion energy267.451568
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 CISD/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 3292 3087 0.00      
2 A1 3254 3052 6.52      
3 A1 3088 2896 12.31      
4 A1 1822 1708 163.06      
5 A1 1742 1634 90.01      
6 A1 1566 1468 13.00      
7 A1 1493 1400 0.25      
8 A1 1273 1194 7.28      
9 A1 1018 955 3.85      
10 A1 913 856 6.53      
11 A1 802 752 0.88      
12 A1 528 495 3.10      
13 A2 1280 1200 0.00      
14 A2 1048 983 0.00      
15 A2 784 735 0.00      
16 A2 377 354 0.00      
17 B1 3109 2916 13.06      
18 B1 1088 1020 8.39      
19 B1 1009 946 8.94      
20 B1 842 790 77.83      
21 B1 601 563 18.01      
22 B1 307 288 2.78      
23 B1 119 112 1.95      
24 B2 3288 3084 23.28      
25 B2 3253 3050 15.35      
26 B2 1759 1650 3.30      
27 B2 1494 1401 25.59      
28 B2 1460 1369 3.43      
29 B2 1361 1276 31.35      
30 B2 1221 1145 11.39      
31 B2 1042 977 7.73      
32 B2 614 575 0.44      
33 B2 468 439 17.51      

Unscaled Zero Point Vibrational Energy (zpe) 23656.4 cm-1
Scaled (by 0.9378) Zero Point Vibrational Energy (zpe) 22185.0 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 CISD/6-31G
ABC
0.17306 0.08814 0.05902

See section I.F.4 to change rotational constant units
Geometric Data calculated at CISD/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 -1.837
C3 0.000 1.262 0.332
C4 0.000 -1.262 0.332
C5 0.000 1.263 -1.010
C6 0.000 -1.263 -1.010
O7 0.000 0.000 2.353
H8 0.000 2.179 0.909
H9 0.000 -2.179 0.909
H10 0.000 2.201 -1.556
H11 0.000 -2.201 -1.556
H12 0.872 0.000 -2.506
H13 -0.872 0.000 -2.506

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 C6 O7 H8 H9 H10 H11 H12 H13
C12.94481.48181.48182.46622.46621.24552.18812.18813.45553.45553.71723.7172
C22.94482.50972.50971.50961.50964.19033.50543.50542.21862.21861.09881.0988
C31.48182.50972.52501.34232.86022.38321.08293.48952.10843.94453.22593.2259
C41.48182.50972.52502.86021.34232.38323.48951.08293.94452.10843.22593.2259
C52.46621.50961.34232.86022.52623.59302.12663.94101.08493.50662.14282.1428
C62.46621.50962.86021.34232.52623.59303.94102.12663.50661.08492.14282.1428
O71.24554.19032.38322.38323.59303.59302.61432.61434.48634.48634.93664.9366
H82.18813.50541.08293.48952.12663.94102.61434.35802.46515.02584.14334.1433
H92.18813.50543.48951.08293.94102.12662.61434.35805.02582.46514.14334.1433
H103.45552.21862.10843.94451.08493.50664.48632.46515.02584.40152.55052.5505
H113.45552.21863.94452.10843.50661.08494.48635.02582.46514.40152.55052.5505
H123.71721.09883.22593.22592.14282.14284.93664.14334.14332.55052.55051.7438
H133.71721.09883.22593.22592.14282.14284.93664.14334.14332.55052.55051.7438

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 121.598 C1 C3 H8 116.241
C1 C4 C6 121.598 C1 C4 H9 116.241
C2 C5 C3 123.176 C2 C5 H10 116.591
C2 C6 C4 123.176 C2 C6 H11 116.591
C3 C1 C4 116.857 C3 C1 O7 121.572
C3 C5 H10 120.233 C4 C1 O7 121.572
C4 C6 H11 120.233 C5 C2 C6 113.594
C5 C2 H12 109.466 C5 C2 H13 109.466
C5 C3 H8 122.160 C6 C2 H12 109.466
C6 C2 H13 109.466 C6 C4 H9 122.160
H12 C2 H13 105.028
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability