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

using model chemistry: QCISD/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 QCISD/6-31G
 hartrees
Energy at 0K-306.108596
Energy at 298.15K-306.115058
HF Energy-305.406298
Nuclear repulsion energy264.719557
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 QCISD/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 3169 3054 0.01      
2 A1 3134 3020 8.51      
3 A1 2981 2872 16.18      
4 A1 1715 1652 69.18      
5 A1 1619 1560 99.43      
6 A1 1524 1469 8.29      
7 A1 1433 1381 0.02      
8 A1 1225 1180 5.47      
9 A1 978 943 3.33      
10 A1 876 844 4.75      
11 A1 764 736 1.42      
12 A1 506 487 2.05      
13 A2 1231 1186 0.00      
14 A2 967 932 0.00      
15 A2 736 709 0.00      
16 A2 350 337 0.00      
17 B1 3000 2891 15.43      
18 B1 1031 993 10.23      
19 B1 949 914 1.50      
20 B1 777 749 69.43      
21 B1 564 544 14.13      
22 B1 274 264 1.99      
23 B1 108 104 1.66      
24 B2 3167 3051 28.76      
25 B2 3132 3018 16.92      
26 B2 1664 1604 2.48      
27 B2 1433 1381 20.50      
28 B2 1399 1348 4.98      
29 B2 1306 1259 27.03      
30 B2 1175 1133 12.02      
31 B2 999 963 7.09      
32 B2 587 566 0.62      
33 B2 445 429 14.63      

Unscaled Zero Point Vibrational Energy (zpe) 22609.4 cm-1
Scaled (by 0.9636) Zero Point Vibrational Energy (zpe) 21786.4 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 QCISD/6-31G
ABC
0.17027 0.08612 0.05781

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.117
C2 0.000 0.000 -1.858
C3 0.000 1.272 0.336
C4 0.000 -1.272 0.336
C5 0.000 1.273 -1.023
C6 0.000 -1.273 -1.023
O7 0.000 0.000 2.382
H8 0.000 2.198 0.918
H9 0.000 -2.198 0.918
H10 0.000 2.220 -1.574
H11 0.000 -2.220 -1.574
H12 0.880 0.000 -2.532
H13 -0.880 0.000 -2.532

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 C6 O7 H8 H9 H10 H11 H12 H13
C12.97441.49291.49292.49002.49001.26562.20672.20673.48813.48813.75303.7530
C22.97442.53602.53601.52251.52254.24003.54073.54072.23802.23801.10851.1085
C31.49292.53602.54501.35902.88582.40971.09333.51882.13193.98053.25843.2584
C41.49292.53602.54502.88581.35902.40973.51881.09333.98052.13193.25843.2584
C52.49001.52251.35902.88582.54663.63572.15033.97711.09523.53642.16152.1615
C62.49001.52252.88581.35902.54663.63573.97712.15033.53641.09522.16152.1615
O71.26564.24002.40972.40973.63573.63572.64082.64084.53644.53644.99224.9922
H82.20673.54071.09333.51882.15033.97712.64084.39562.49225.07224.18424.1842
H92.20673.54073.51881.09333.97712.15032.64084.39565.07222.49224.18424.1842
H103.48812.23802.13193.98051.09523.53644.53642.49225.07224.43992.57302.5730
H113.48812.23803.98052.13193.53641.09524.53645.07222.49224.43992.57302.5730
H123.75301.10853.25843.25842.16152.16154.99224.18424.18422.57302.57301.7601
H133.75301.10853.25843.25842.16152.16154.99224.18424.18422.57302.57301.7601

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 121.565 C1 C3 H8 116.285
C1 C4 C6 121.565 C1 C4 H9 116.285
C2 C5 C3 123.210 C2 C5 H10 116.565
C2 C6 C4 123.210 C2 C6 H11 116.565
C3 C1 C4 116.939 C3 C1 O7 121.530
C3 C5 H10 120.225 C4 C1 O7 121.530
C4 C6 H11 120.225 C5 C2 C6 113.511
C5 C2 H12 109.471 C5 C2 H13 109.471
C5 C3 H8 122.150 C6 C2 H12 109.471
C6 C2 H13 109.471 C6 C4 H9 122.150
H12 C2 H13 105.106
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability