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

using model chemistry: MP3/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at MP3/6-31G*
 hartrees
Energy at 0K-306.496505
Energy at 298.15K-306.503068
HF Energy-305.539610
Nuclear repulsion energy268.526359
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 MP3/6-31G*
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 3259 3059 0.19      
2 A1 3223 3025 4.83      
3 A1 3067 2879 9.31      
4 A1 1854 1740 218.28      
5 A1 1761 1653 0.53      
6 A1 1513 1420 12.32      
7 A1 1457 1368 2.32      
8 A1 1230 1155 4.18      
9 A1 988 928 2.91      
10 A1 910 854 7.40      
11 A1 794 746 1.78      
12 A1 511 480 2.15      
13 A2 1244 1167 0.00      
14 A2 989 929 0.00      
15 A2 753 707 0.00      
16 A2 354 332 0.00      
17 B1 3091 2901 8.87      
18 B1 1025 962 10.65      
19 B1 969 910 6.35      
20 B1 825 775 56.96      
21 B1 576 541 16.87      
22 B1 282 265 2.60      
23 B1 117 110 1.39      
24 B2 3257 3057 13.55      
25 B2 3222 3024 15.23      
26 B2 1734 1628 2.75      
27 B2 1474 1384 37.49      
28 B2 1436 1347 1.59      
29 B2 1324 1243 25.39      
30 B2 1181 1109 7.81      
31 B2 1026 963 5.32      
32 B2 590 553 0.25      
33 B2 461 433 16.66      

Unscaled Zero Point Vibrational Energy (zpe) 23250.7 cm-1
Scaled (by 0.9386) Zero Point Vibrational Energy (zpe) 21823.1 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 MP3/6-31G*
ABC
0.17382 0.08911 0.05955

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP3/6-31G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.111
C2 0.000 0.000 -1.825
C3 0.000 1.261 0.333
C4 0.000 -1.261 0.333
C5 0.000 1.258 -1.008
C6 0.000 -1.258 -1.008
O7 0.000 0.000 2.334
H8 0.000 2.180 0.911
H9 0.000 -2.180 0.911
H10 0.000 2.199 -1.555
H11 0.000 -2.199 -1.555
H12 0.871 0.000 -2.498
H13 -0.871 0.000 -2.498

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 C6 O7 H8 H9 H10 H11 H12 H13
C12.93591.48131.48132.46412.46411.22292.18892.18893.45563.45563.71273.7127
C22.93592.49922.49921.50031.50034.15873.49863.49862.21532.21531.10061.1006
C31.48132.49922.52131.34082.85342.36481.08613.48882.10823.94113.21933.2193
C41.48132.49922.52132.85341.34082.36483.48881.08613.94112.10823.21933.2193
C52.46411.50031.34082.85342.51633.57052.12913.93741.08823.50002.13602.1360
C62.46411.50032.85341.34082.51633.57053.93742.12913.50001.08822.13602.1360
O71.22294.15872.36482.36483.57053.57052.60282.60284.46734.46734.90994.9099
H82.18893.49861.08613.48882.12913.93742.60284.35972.46655.02554.13964.1396
H92.18893.49863.48881.08613.93742.12912.60284.35975.02552.46654.13964.1396
H103.45562.21532.10823.94111.08823.50004.46732.46655.02554.39762.54612.5461
H113.45562.21533.94112.10823.50001.08824.46735.02552.46654.39762.54612.5461
H123.71271.10063.21933.21932.13602.13604.90994.13964.13962.54612.54611.7412
H133.71271.10063.21933.21932.13602.13604.90994.13964.13962.54612.54611.7412

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 121.569 C1 C3 H8 116.142
C1 C4 C6 121.569 C1 C4 H9 116.142
C2 C5 C3 123.113 C2 C5 H10 116.805
C2 C6 C4 123.113 C2 C6 H11 116.805
C3 C1 C4 116.648 C3 C1 O7 121.676
C3 C5 H10 120.082 C4 C1 O7 121.676
C4 C6 H11 120.082 C5 C2 C6 113.988
C5 C2 H12 109.466 C5 C2 H13 109.466
C5 C3 H8 122.289 C6 C2 H12 109.466
C6 C2 H13 109.466 C6 C4 H9 122.289
H12 C2 H13 104.564
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability