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

using model chemistry: MP2=FULL/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 MP2=FULL/6-31G
 hartrees
Energy at 0K-306.069180
Energy at 298.15K-306.075645
HF Energy-305.406322
Nuclear repulsion energy265.091262
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=FULL/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 3209 3049 0.00      
2 A1 3178 3019 8.64      
3 A1 3023 2872 10.12      
4 A1 1698 1614 33.80      
5 A1 1596 1516 39.21      
6 A1 1532 1455 11.83      
7 A1 1440 1368 0.21      
8 A1 1235 1173 3.77      
9 A1 983 934 3.00      
10 A1 887 843 7.26      
11 A1 774 735 1.71      
12 A1 509 483 1.40      
13 A2 1230 1169 0.00      
14 A2 962 914 0.00      
15 A2 737 700 0.00      
16 A2 350 332 0.00      
17 B1 3048 2896 11.87      
18 B1 1031 979 11.93      
19 B1 955 907 0.33      
20 B1 769 730 66.88      
21 B1 560 532 16.36      
22 B1 268 254 2.21      
23 B1 108 103 1.30      
24 B2 3207 3047 29.19      
25 B2 3176 3018 14.13      
26 B2 1651 1569 5.00      
27 B2 1446 1374 23.75      
28 B2 1401 1331 5.42      
29 B2 1316 1251 25.65      
30 B2 1186 1127 11.37      
31 B2 1010 959 7.43      
32 B2 591 561 1.04      
33 B2 446 423 13.75      

Unscaled Zero Point Vibrational Energy (zpe) 22754.3 cm-1
Scaled (by 0.9501) Zero Point Vibrational Energy (zpe) 21618.8 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 MP2=FULL/6-31G
ABC
0.17165 0.08607 0.05794

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/6-31G

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.113
C2 0.000 0.000 -1.855
C3 0.000 1.266 0.336
C4 0.000 -1.266 0.336
C5 0.000 1.269 -1.025
C6 0.000 -1.269 -1.025
O7 0.000 0.000 2.387
H8 0.000 2.192 0.912
H9 0.000 -2.192 0.912
H10 0.000 2.215 -1.571
H11 0.000 -2.215 -1.571
H12 0.877 0.000 -2.528
H13 -0.877 0.000 -2.528

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 C6 O7 H8 H9 H10 H11 H12 H13
C12.96761.48541.48542.48612.48611.27402.20082.20083.47953.47953.74543.7454
C22.96762.52972.52971.51611.51614.24163.52953.52952.23272.23271.10561.1056
C31.48542.52972.53151.36052.87672.41041.09063.50512.12953.96833.25173.2517
C41.48542.52972.53152.87671.36052.41043.50511.09063.96832.12953.25173.2517
C52.48611.51611.36052.87672.53783.64022.14543.96571.09193.52602.15392.1539
C62.48611.51612.87671.36052.53783.64023.96572.14543.52601.09192.15392.1539
O71.27404.24162.41042.41043.64023.64022.64172.64174.53524.53524.99304.9930
H82.20083.52951.09063.50512.14543.96572.64174.38322.48295.05754.17234.1723
H92.20083.52953.50511.09063.96572.14542.64174.38325.05752.48294.17234.1723
H103.47952.23272.12953.96831.09193.52604.53522.48295.05754.42912.56712.5671
H113.47952.23273.96832.12953.52601.09194.53525.05752.48294.42912.56712.5671
H123.74541.10563.25173.25172.15392.15394.99304.17234.17232.56712.56711.7531
H133.74541.10563.25173.25172.15392.15394.99304.17234.17232.56712.56711.7531

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 121.689 C1 C3 H8 116.541
C1 C4 C6 121.689 C1 C4 H9 116.541
C2 C5 C3 123.048 C2 C5 H10 116.823
C2 C6 C4 123.048 C2 C6 H11 116.823
C3 C1 C4 116.889 C3 C1 O7 121.556
C3 C5 H10 120.130 C4 C1 O7 121.556
C4 C6 H11 120.130 C5 C2 C6 113.639
C5 C2 H12 109.484 C5 C2 H13 109.484
C5 C3 H8 121.770 C6 C2 H12 109.484
C6 C2 H13 109.484 C6 C4 H9 121.770
H12 C2 H13 104.900
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability