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

using model chemistry: MP2/CEP-121G*

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-121G*
 hartrees
Energy at 0K-53.037747
Energy at 298.15K-53.043747
HF Energy-52.100216
Nuclear repulsion energy136.695049
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-121G*
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 3223 3071 0.05      
2 A1 3186 3036 7.35      
3 A1 3043 2899 11.15      
4 A1 1701 1621 141.96      
5 A1 1645 1567 41.81      
6 A1 1472 1402 17.39      
7 A1 1410 1343 1.45      
8 A1 1193 1136 6.59      
9 A1 956 911 3.02      
10 A1 889 847 8.79      
11 A1 771 734 2.62      
12 A1 493 470 1.83      
13 A2 1202 1145 0.00      
14 A2 910 867 0.00      
15 A2 731 696 0.00      
16 A2 316 301 0.00      
17 B1 3079 2934 8.41      
18 B1 969 924 29.66      
19 B1 915 872 0.31      
20 B1 756 721 61.60      
21 B1 528 503 15.42      
22 B1 126 120 0.28      
23 B1 51 49 2.62      
24 B2 3222 3070 18.33      
25 B2 3186 3036 17.13      
26 B2 1637 1560 3.83      
27 B2 1436 1368 39.66      
28 B2 1400 1334 4.28      
29 B2 1282 1222 20.29      
30 B2 1148 1094 8.25      
31 B2 1003 956 6.79      
32 B2 568 541 0.93      
33 B2 439 418 13.66      

Unscaled Zero Point Vibrational Energy (zpe) 22441.2 cm-1
Scaled (by 0.9528) Zero Point Vibrational Energy (zpe) 21382.0 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 MP2/CEP-121G*
ABC
0.17219 0.08733 0.05856

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/CEP-121G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.116
C2 0.000 0.000 -1.840
C3 0.000 1.266 0.335
C4 0.000 -1.266 0.335
C5 0.000 1.265 -1.022
C6 0.000 -1.265 -1.022
O7 0.000 0.000 2.363
H8 0.000 2.190 0.910
H9 0.000 -2.190 0.910
H10 0.000 2.211 -1.563
H11 0.000 -2.211 -1.563
H12 0.874 0.000 -2.510
H13 -0.874 0.000 -2.510

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 C6 O7 H8 H9 H10 H11 H12 H13
C12.95591.48701.48702.48402.48401.24672.19972.19973.47413.47413.73003.7300
C22.95592.51652.51651.50641.50644.20263.51493.51492.22872.22871.10141.1014
C31.48702.51652.53101.35712.87132.39001.08833.50292.12113.96163.23443.2344
C41.48702.51652.53102.87131.35712.39003.50291.08833.96162.12113.23443.2344
C52.48401.50641.35712.87132.52983.61322.14143.95801.09053.51832.13982.1398
C62.48401.50642.87131.35712.52983.61323.95802.14143.51831.09052.13982.1398
O71.24674.20262.39002.39003.61323.61322.62832.62834.50604.50604.95064.9506
H82.19973.51491.08833.50292.14143.95802.62834.38002.47285.04854.15374.1537
H92.19973.51493.50291.08833.95802.14142.62834.38005.04852.47284.15374.1537
H103.47412.22872.12113.96161.09053.51834.50602.47285.04854.42302.55952.5595
H113.47412.22873.96162.12113.51831.09054.50605.04852.47284.42302.55952.5595
H123.73001.10143.23443.23442.13982.13984.95064.15374.15372.55952.55951.7479
H133.73001.10143.23443.23442.13982.13984.95064.15374.15372.55952.55951.7479

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 121.647 C1 C3 H8 116.480
C1 C4 C6 121.647 C1 C4 H9 116.480
C2 C5 C3 122.919 C2 C5 H10 117.337
C2 C6 C4 122.919 C2 C6 H11 117.337
C3 C1 C4 116.652 C3 C1 O7 121.674
C3 C5 H10 119.744 C4 C1 O7 121.674
C4 C6 H11 119.744 C5 C2 C6 114.216
C5 C2 H12 109.299 C5 C2 H13 109.299
C5 C3 H8 121.873 C6 C2 H12 109.299
C6 C2 H13 109.299 C6 C4 H9 121.873
H12 C2 H13 105.025
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability