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

using model chemistry: MP4=FULL/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at MP4=FULL/3-21G
 hartrees
Energy at 0K-304.555145
Energy at 298.15K-304.561661
HF Energy-303.820304
Nuclear repulsion energy264.603564
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 MP4=FULL/3-21G
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 3167 3100        
2 A1 3128 3062        
3 A1 3001 2937        
4 A1 1668 1633        
5 A1 1572 1539        
6 A1 1529 1496        
7 A1 1428 1398        
8 A1 1233 1207        
9 A1 964 943        
10 A1 840 822        
11 A1 722 707        
12 A1 504 493        
13 A2 1260 1234        
14 A2 1005 984        
15 A2 754 738        
16 A2 359 352        
17 B1 3022 2958        
18 B1 1019 998        
19 B1 981 960        
20 B1 850 832        
21 B1 582 570        
22 B1 297 291        
23 B1 118 115        
24 B2 3164 3097        
25 B2 3126 3060        
26 B2 1624 1589        
27 B2 1417 1387        
28 B2 1369 1340        
29 B2 1268 1241        
30 B2 1145 1121        
31 B2 962 941        
32 B2 573 561        
33 B2 428 419        

Unscaled Zero Point Vibrational Energy (zpe) 22539.9 cm-1
Scaled (by 0.9788) Zero Point Vibrational Energy (zpe) 22062.0 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 MP4=FULL/3-21G
ABC
0.17123 0.08540 0.05759

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP4=FULL/3-21G

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.132
C2 0.000 0.000 -1.865
C3 0.000 1.265 0.328
C4 0.000 -1.265 0.328
C5 0.000 1.272 -1.025
C6 0.000 -1.272 -1.025
O7 0.000 0.000 2.396
H8 0.000 2.192 0.902
H9 0.000 -2.192 0.902
H10 0.000 2.217 -1.573
H11 0.000 -2.217 -1.573
H12 0.884 0.000 -2.528
H13 -0.884 0.000 -2.528

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 C6 O7 H8 H9 H10 H11 H12 H13
C12.99711.49931.49932.50392.50391.26432.20382.20383.49763.49763.76533.7653
C22.99712.53182.53181.52501.52504.26143.53023.53022.23622.23621.10511.1051
C31.49932.53182.53081.35232.87562.42491.09013.50462.12583.96753.24633.2463
C41.49932.53182.53082.87561.35232.42493.50461.09013.96752.12583.24633.2463
C52.50391.52501.35232.87562.54483.64982.13493.96401.09243.53232.15902.1590
C62.50391.52502.87561.35232.54483.64983.96402.13493.53231.09242.15902.1590
O71.26434.26142.42492.42493.64983.64982.65262.65264.54664.54665.00315.0031
H82.20383.53021.09013.50462.13493.96402.65264.38362.47565.05624.16564.1656
H92.20383.53023.50461.09013.96402.13492.65264.38365.05622.47564.16564.1656
H103.49762.23622.12583.96751.09243.53234.54662.47565.05624.43402.57072.5707
H113.49762.23623.96752.12583.53231.09244.54665.05622.47564.43402.57072.5707
H123.76531.10513.24633.24632.15902.15905.00314.16564.16562.57072.57071.7683
H133.76531.10513.24633.24632.15902.15905.00314.16564.16562.57072.57071.7683

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 122.735 C1 C3 H8 115.756
C1 C4 C6 122.735 C1 C4 H9 115.756
C2 C5 C3 123.154 C2 C5 H10 116.400
C2 C6 C4 123.154 C2 C6 H11 116.400
C3 C1 C4 115.123 C3 C1 O7 122.438
C3 C5 H10 120.446 C4 C1 O7 122.438
C4 C6 H11 120.446 C5 C2 C6 113.098
C5 C2 H12 109.308 C5 C2 H13 109.308
C5 C3 H8 121.508 C6 C2 H12 109.308
C6 C2 H13 109.308 C6 C4 H9 121.508
H12 C2 H13 106.282
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability