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

using model chemistry: MP2/6-31G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at MP2/6-31G**
 hartrees
Energy at 0K-306.512580
Energy at 298.15K-306.519050
HF Energy-305.548225
Nuclear repulsion energy268.448103
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 MP2/6-31G**
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 3282 3074 0.06      
2 A1 3246 3040 4.73      
3 A1 3089 2893 8.20      
4 A1 1758 1647 123.87      
5 A1 1699 1591 17.12      
6 A1 1492 1398 12.05      
7 A1 1443 1352 1.83      
8 A1 1214 1137 3.95      
9 A1 973 911 3.58      
10 A1 909 851 7.95      
11 A1 789 739 1.88      
12 A1 503 471 1.58      
13 A2 1225 1148 0.00      
14 A2 984 921 0.00      
15 A2 748 700 0.00      
16 A2 342 320 0.00      
17 B1 3123 2925 7.08      
18 B1 1004 941 8.13      
19 B1 967 905 8.54      
20 B1 801 750 48.08      
21 B1 561 526 12.72      
22 B1 258 241 2.66      
23 B1 113 106 1.05      
24 B2 3281 3073 13.88      
25 B2 3246 3040 14.29      
26 B2 1688 1580 3.69      
27 B2 1462 1369 40.64      
28 B2 1418 1328 1.39      
29 B2 1307 1224 24.33      
30 B2 1165 1091 7.19      
31 B2 1021 956 4.92      
32 B2 580 543 0.59      
33 B2 450 421 14.89      

Unscaled Zero Point Vibrational Energy (zpe) 23070.1 cm-1
Scaled (by 0.9365) Zero Point Vibrational Energy (zpe) 21605.2 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 MP2/6-31G**
ABC
0.17511 0.08857 0.05945

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/6-31G**

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.109
C2 0.000 0.000 -1.826
C3 0.000 1.254 0.333
C4 0.000 -1.254 0.333
C5 0.000 1.254 -1.014
C6 0.000 -1.254 -1.014
O7 0.000 0.000 2.347
H8 0.000 2.174 0.904
H9 0.000 -2.174 0.904
H10 0.000 2.194 -1.556
H11 0.000 -2.194 -1.556
H12 0.867 0.000 -2.497
H13 -0.867 0.000 -2.497

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 C6 O7 H8 H9 H10 H11 H12 H13
C12.93461.47521.47522.46552.46551.23762.18342.18343.45123.45123.70853.7085
C22.93462.49632.49631.49431.49434.17223.48923.48922.21022.21021.09661.0966
C31.47522.49632.50881.34622.84722.37271.08233.47542.10873.93113.21413.2141
C41.47522.49632.50882.84721.34622.37273.47541.08233.93112.10873.21413.2141
C52.46551.49431.34622.84722.50883.58672.12643.92791.08433.49032.12732.1273
C62.46551.49432.84721.34622.50883.58673.92792.12643.49031.08432.12732.1273
O71.23764.17222.37272.37273.58673.58672.60902.60904.47644.47644.92034.9203
H82.18343.48921.08233.47542.12643.92792.60904.34752.45935.01214.12804.1280
H92.18343.48923.47541.08233.92792.12642.60904.34755.01212.45934.12804.1280
H103.45122.21022.10873.93111.08433.49034.47642.45935.01214.38722.53972.5397
H113.45122.21023.93112.10873.49031.08434.47645.01212.45934.38722.53972.5397
H123.70851.09663.21413.21412.12732.12734.92034.12804.12802.53972.53971.7346
H133.70851.09663.21413.21412.12732.12734.92034.12804.12802.53972.53971.7346

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 121.754 C1 C3 H8 116.391
C1 C4 C6 121.754 C1 C4 H9 116.391
C2 C5 C3 122.917 C2 C5 H10 117.101
C2 C6 C4 122.917 C2 C6 H11 117.101
C3 C1 C4 116.491 C3 C1 O7 121.755
C3 C5 H10 119.982 C4 C1 O7 121.755
C4 C6 H11 119.982 C5 C2 C6 114.166
C5 C2 H12 109.424 C5 C2 H13 109.424
C5 C3 H8 121.854 C6 C2 H12 109.424
C6 C2 H13 109.424 C6 C4 H9 121.854
H12 C2 H13 104.538
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability