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: CID/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 CID/6-31G
 hartrees
Energy at 0K-305.969867
Energy at 298.15K-305.976632
HF Energy-305.412479
Nuclear repulsion energy267.534164
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 CID/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 3294 3081 0.00      
2 A1 3257 3046 6.40      
3 A1 3090 2890 12.02      
4 A1 1827 1709 167.06      
5 A1 1750 1637 79.53      
6 A1 1567 1465 13.21      
7 A1 1494 1398 0.33      
8 A1 1274 1192 6.94      
9 A1 1019 953 3.69      
10 A1 914 855 6.75      
11 A1 804 752 0.87      
12 A1 529 494 3.03      
13 A2 1280 1197 0.00      
14 A2 1047 979 0.00      
15 A2 782 732 0.00      
16 A2 377 353 0.00      
17 B1 3111 2910 13.01      
18 B1 1087 1017 8.76      
19 B1 1008 943 8.27      
20 B1 841 786 77.74      
21 B1 600 561 18.28      
22 B1 307 287 2.81      
23 B1 119 111 1.99      
24 B2 3290 3077 23.22      
25 B2 3255 3044 15.19      
26 B2 1763 1649 3.27      
27 B2 1495 1398 25.84      
28 B2 1461 1367 3.46      
29 B2 1363 1274 30.98      
30 B2 1222 1143 11.07      
31 B2 1043 975 7.63      
32 B2 614 575 0.41      
33 B2 469 439 17.61      

Unscaled Zero Point Vibrational Energy (zpe) 23677.1 cm-1
Scaled (by 0.9352) Zero Point Vibrational Energy (zpe) 22142.8 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 CID/6-31G
ABC
0.17310 0.08822 0.05906

See section I.F.4 to change rotational constant units
Geometric Data calculated at CID/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 -1.836
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 2.352
H8 0.000 2.179 0.909
H9 0.000 -2.179 0.909
H10 0.000 2.200 -1.556
H11 0.000 -2.200 -1.556
H12 0.872 0.000 -2.505
H13 -0.872 0.000 -2.505

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 C6 O7 H8 H9 H10 H11 H12 H13
C12.94401.48161.48162.46552.46551.24422.18792.18793.45483.45483.71653.7165
C22.94402.50912.50911.50941.50944.18823.50483.50482.21832.21831.09871.0987
C31.48162.50912.52471.34192.85972.38181.08293.48922.10803.94393.22533.2253
C41.48162.50912.52472.85971.34192.38183.48921.08293.94392.10803.22533.2253
C52.46551.50941.34192.85972.52603.59112.12613.94051.08483.50622.14272.1427
C62.46551.50942.85971.34192.52603.59113.94052.12613.50621.08482.14272.1427
O71.24424.18822.38182.38183.59113.59112.61332.61334.48454.48454.93464.9346
H82.18793.50481.08293.48922.12613.94052.61334.35772.46465.02524.14274.1427
H92.18793.50483.48921.08293.94052.12612.61334.35775.02522.46464.14274.1427
H103.45482.21832.10803.94391.08483.50624.48452.46465.02524.40102.55022.5502
H113.45482.21833.94392.10803.50621.08484.48455.02522.46464.40102.55022.5502
H123.71651.09873.22533.22532.14272.14274.93464.14274.14272.55022.55021.7437
H133.71651.09873.22533.22532.14272.14274.93464.14274.14272.55022.55021.7437

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 121.596 C1 C3 H8 116.246
C1 C4 C6 121.596 C1 C4 H9 116.246
C2 C5 C3 123.175 C2 C5 H10 116.588
C2 C6 C4 123.175 C2 C6 H11 116.588
C3 C1 C4 116.863 C3 C1 O7 121.569
C3 C5 H10 120.238 C4 C1 O7 121.569
C4 C6 H11 120.238 C5 C2 C6 113.595
C5 C2 H12 109.467 C5 C2 H13 109.467
C5 C3 H8 122.158 C6 C2 H12 109.467
C6 C2 H13 109.467 C6 C4 H9 122.158
H12 C2 H13 105.023
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability