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

using model chemistry: MP2/STO-3G

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/STO-3G
 hartrees
Energy at 0K-302.105425
Energy at 298.15K-302.111596
HF Energy-301.688460
Nuclear repulsion energy261.830613
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/STO-3G
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 3511 3061 0.26      
2 A1 3487 3041 6.57      
3 A1 3365 2934 1.20      
4 A1 1813 1581 13.67      
5 A1 1694 1477 1.02      
6 A1 1685 1469 1.09      
7 A1 1528 1332 0.00      
8 A1 1280 1116 0.25      
9 A1 996 868 0.18      
10 A1 949 828 0.34      
11 A1 781 681 2.77      
12 A1 503 439 0.01      
13 A2 1337 1166 0.00      
14 A2 1081 943 0.00      
15 A2 768 670 0.00      
16 A2 386 337 0.00      
17 B1 3459 3016 0.90      
18 B1 1087 947 0.01      
19 B1 1065 929 1.39      
20 B1 847 738 20.78      
21 B1 593 517 6.37      
22 B1 294 257 0.58      
23 B1 98 86 0.22      
24 B2 3510 3060 0.89      
25 B2 3487 3040 0.94      
26 B2 1772 1545 0.50      
27 B2 1540 1343 1.37      
28 B2 1510 1316 11.64      
29 B2 1330 1159 38.09      
30 B2 1219 1063 9.56      
31 B2 1073 936 2.47      
32 B2 602 525 0.26      
33 B2 438 381 6.39      

Unscaled Zero Point Vibrational Energy (zpe) 24543.1 cm-1
Scaled (by 0.8719) Zero Point Vibrational Energy (zpe) 21399.2 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/STO-3G
ABC
0.16668 0.08377 0.05634

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/STO-3G

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.150
C2 0.000 0.000 -1.879
C3 0.000 1.288 0.323
C4 0.000 -1.288 0.323
C5 0.000 1.284 -1.032
C6 0.000 -1.284 -1.032
O7 0.000 0.000 2.424
H8 0.000 2.237 0.882
H9 0.000 -2.237 0.882
H10 0.000 2.236 -1.589
H11 0.000 -2.236 -1.589
H12 0.886 0.000 -2.549
H13 -0.886 0.000 -2.549

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 C6 O7 H8 H9 H10 H11 H12 H13
C13.02921.53071.53072.53222.53221.27402.25342.25343.53633.53633.80413.8041
C23.02922.55112.55111.53811.53814.30323.55413.55412.25492.25491.11121.1112
C31.53072.55112.57601.35542.90742.46441.10203.56962.13464.00973.27033.2703
C41.53072.55112.57602.90741.35542.46443.56961.10204.00972.13463.27033.2703
C52.53221.53811.35542.90742.56823.68732.13904.00841.10313.56412.17612.1761
C62.53221.53812.90741.35542.56823.68734.00842.13903.56411.10312.17612.1761
O71.27404.30322.46442.46443.68733.68732.71722.71724.59454.59455.05185.0518
H82.25343.55411.10203.56962.13904.00842.71724.47492.47185.11114.19154.1915
H92.25343.55413.56961.10204.00842.13902.71724.47495.11112.47184.19154.1915
H103.53632.25492.13464.00971.10313.56414.59452.47185.11114.47242.58992.5899
H113.53632.25494.00972.13463.56411.10314.59455.11112.47184.47242.58992.5899
H123.80411.11123.27033.27032.17612.17615.05184.19154.19152.58992.58991.7725
H133.80411.11123.27033.27032.17612.17615.05184.19154.19152.58992.58991.7725

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 122.542 C1 C3 H8 116.791
C1 C4 C6 122.542 C1 C4 H9 116.791
C2 C5 C3 123.566 C2 C5 H10 116.268
C2 C6 C4 123.566 C2 C6 H11 116.268
C3 C1 C4 114.586 C3 C1 O7 122.707
C3 C5 H10 120.166 C4 C1 O7 122.707
C4 C6 H11 120.166 C5 C2 C6 113.199
C5 C2 H12 109.393 C5 C2 H13 109.393
C5 C3 H8 120.667 C6 C2 H12 109.393
C6 C2 H13 109.393 C6 C4 H9 120.667
H12 C2 H13 105.805
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability