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

using model chemistry: MP2/CEP-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 MP2/CEP-31G*
 hartrees
Energy at 0K-52.954357
Energy at 298.15K-52.960810
HF Energy-52.076601
Nuclear repulsion energy135.665800
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 MP2/CEP-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 3231 3067 0.26      
2 A1 3185 3024 6.56      
3 A1 3064 2909 11.55      
4 A1 1733 1645 149.02      
5 A1 1666 1582 43.19      
6 A1 1467 1393 16.47      
7 A1 1407 1335 2.79      
8 A1 1187 1127 4.58      
9 A1 950 902 1.70      
10 A1 899 853 10.36      
11 A1 778 739 1.59      
12 A1 487 462 1.40      
13 A2 1221 1159 0.00      
14 A2 985 935 0.00      
15 A2 764 725 0.00      
16 A2 347 330 0.00      
17 B1 3112 2955 11.23      
18 B1 996 946 7.55      
19 B1 957 909 33.42      
20 B1 831 789 50.97      
21 B1 567 538 28.91      
22 B1 286 271 2.73      
23 B1 120 114 0.79      
24 B2 3230 3067 20.45      
25 B2 3185 3024 16.29      
26 B2 1669 1584 4.26      
27 B2 1450 1377 42.34      
28 B2 1403 1332 5.94      
29 B2 1286 1221 20.54      
30 B2 1141 1083 6.07      
31 B2 1010 959 5.72      
32 B2 562 533 0.53      
33 B2 436 414 14.27      

Unscaled Zero Point Vibrational Energy (zpe) 22804.6 cm-1
Scaled (by 0.9494) Zero Point Vibrational Energy (zpe) 21650.7 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 MP2/CEP-31G*
ABC
0.17012 0.08584 0.05766

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/CEP-31G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.128
C2 0.000 0.000 -1.856
C3 0.000 1.274 0.342
C4 0.000 -1.274 0.342
C5 0.000 1.271 -1.033
C6 0.000 -1.271 -1.033
O7 0.000 0.000 2.380
H8 0.000 2.208 0.916
H9 0.000 -2.208 0.916
H10 0.000 2.224 -1.579
H11 0.000 -2.224 -1.579
H12 0.882 0.000 -2.529
H13 -0.882 0.000 -2.529

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 C6 O7 H8 H9 H10 H11 H12 H13
C12.98361.49671.49672.50692.50691.25242.21782.21783.50323.50323.76143.7614
C22.98362.54092.54091.51391.51394.23603.54323.54322.24162.24161.10921.1092
C31.49672.54092.54831.37572.89302.40321.09543.52862.14333.99133.26273.2627
C41.49672.54092.54832.89301.37572.40323.52861.09543.99132.14333.26273.2627
C52.50691.51391.37572.89302.54183.64232.16223.98721.09853.53762.15162.1516
C62.50691.51392.89301.37572.54183.64233.98722.16223.53761.09852.15162.1516
O71.25244.23602.40322.40323.64233.64232.64922.64924.54104.54104.98754.9875
H82.21783.54321.09543.52862.16223.98722.64924.41522.49435.08574.18514.1851
H92.21783.54323.52861.09543.98722.16222.64924.41525.08572.49434.18514.1851
H103.50322.24162.14333.99131.09853.53764.54102.49435.08574.44882.57462.5746
H113.50322.24163.99132.14333.53761.09854.54105.08572.49434.44882.57462.5746
H123.76141.10923.26273.26272.15162.15164.98754.18514.18512.57462.57461.7635
H133.76141.10923.26273.26272.15162.15164.98754.18514.18512.57462.57461.7635

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 121.511 C1 C3 H8 116.805
C1 C4 C6 121.511 C1 C4 H9 116.805
C2 C5 C3 123.049 C2 C5 H10 117.314
C2 C6 C4 123.049 C2 C6 H11 117.314
C3 C1 C4 116.709 C3 C1 O7 121.646
C3 C5 H10 119.637 C4 C1 O7 121.646
C4 C6 H11 119.637 C5 C2 C6 114.171
C5 C2 H12 109.249 C5 C2 H13 109.249
C5 C3 H8 121.683 C6 C2 H12 109.249
C6 C2 H13 109.249 C6 C4 H9 121.683
H12 C2 H13 105.296
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability