return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

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

using model chemistry: mPW1PW91/cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at mPW1PW91/cc-pVTZ
 hartrees
Energy at 0K-307.473464
Energy at 298.15K-307.480143
HF Energy-307.473464
Nuclear repulsion energy270.323497
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 mPW1PW91/cc-pVTZ
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 3214 3082 0.20      
2 A1 3176 3046 7.08      
3 A1 3014 2891 7.23      
4 A1 1770 1697 323.20      
5 A1 1721 1651 3.22      
6 A1 1426 1368 2.62      
7 A1 1419 1361 25.78      
8 A1 1194 1145 7.34      
9 A1 973 933 6.11      
10 A1 900 863 11.20      
11 A1 785 753 1.82      
12 A1 508 487 3.02      
13 A2 1207 1158 0.00      
14 A2 1030 988 0.00      
15 A2 759 728 0.00      
16 A2 366 351 0.00      
17 B1 3028 2904 3.69      
18 B1 1046 1003 0.02      
19 B1 951 912 32.11      
20 B1 873 837 28.95      
21 B1 577 554 24.17      
22 B1 323 309 2.87      
23 B1 126 120 0.89      
24 B2 3212 3081 12.55      
25 B2 3175 3046 11.80      
26 B2 1684 1615 3.08      
27 B2 1437 1378 35.39      
28 B2 1390 1333 1.07      
29 B2 1283 1231 26.63      
30 B2 1144 1097 7.35      
31 B2 1006 965 6.34      
32 B2 580 557 1.01      
33 B2 456 437 14.06      

Unscaled Zero Point Vibrational Energy (zpe) 22874.9 cm-1
Scaled (by 0.9592) Zero Point Vibrational Energy (zpe) 21941.6 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 mPW1PW91/cc-pVTZ
ABC
0.17675 0.09013 0.06033

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/cc-pVTZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.106
C2 0.000 0.000 -1.808
C3 0.000 1.248 0.328
C4 0.000 -1.248 0.328
C5 0.000 1.248 -1.004
C6 0.000 -1.248 -1.004
O7 0.000 0.000 2.323
H8 0.000 2.166 0.901
H9 0.000 -2.166 0.901
H10 0.000 2.185 -1.550
H11 0.000 -2.185 -1.550
H12 0.863 0.000 -2.486
H13 -0.863 0.000 -2.486

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 C6 O7 H8 H9 H10 H11 H12 H13
C12.91401.47091.47092.45172.45171.21702.17612.17613.43923.43923.69493.6949
C22.91402.47432.47431.48451.48454.13103.46873.46872.20012.20011.09791.0979
C31.47092.47432.49691.33242.82982.35321.08203.46252.09873.91353.19803.1980
C41.47092.47432.49692.82981.33242.35323.46251.08203.91352.09873.19803.1980
C52.45171.48451.33242.82982.49613.55362.11503.91001.08423.47612.12142.1214
C62.45171.48452.82981.33242.49613.55363.91002.11503.47611.08422.12142.1214
O71.21704.13102.35322.35323.55363.55362.59142.59144.44674.44674.88654.8865
H82.17613.46871.08203.46252.11503.91002.59144.33282.45114.99414.11274.1127
H92.17613.46873.46251.08203.91002.11502.59144.33284.99412.45114.11274.1127
H103.43922.20012.09873.91351.08423.47614.44672.45114.99414.36972.52902.5290
H113.43922.20013.91352.09873.47611.08424.44674.99412.45114.36972.52902.5290
H123.69491.09793.19803.19802.12142.12144.88654.11274.11272.52902.52901.7261
H133.69491.09793.19803.19802.12142.12144.88654.11274.11272.52902.52901.7261

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 121.907 C1 C3 H8 116.113
C1 C4 C6 121.907 C1 C4 H9 116.113
C2 C5 C3 122.799 C2 C5 H10 116.992
C2 C6 C4 122.799 C2 C6 H11 116.992
C3 C1 C4 116.153 C3 C1 O7 121.923
C3 C5 H10 120.209 C4 C1 O7 121.923
C4 C6 H11 120.209 C5 C2 C6 114.434
C5 C2 H12 109.553 C5 C2 H13 109.553
C5 C3 H8 121.980 C6 C2 H12 109.553
C6 C2 H13 109.553 C6 C4 H9 121.980
H12 C2 H13 103.643
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.235      
2 C -0.056      
3 C -0.149      
4 C -0.149      
5 C -0.116      
6 C -0.116      
7 O -0.315      
8 H 0.118      
9 H 0.118      
10 H 0.117      
11 H 0.117      
12 H 0.098      
13 H 0.098      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.000 0.000 -4.633 4.633
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -41.877 0.000 0.000
y 0.000 -36.089 0.000
z 0.000 0.000 -44.950
Traceless
 xyz
x -1.357 0.000 0.000
y 0.000 7.324 0.000
z 0.000 0.000 -5.967
Polar
3z2-r2-11.934
x2-y2-5.788
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.736 0.000 0.000
y 0.000 9.931 0.000
z 0.000 0.000 14.225


<r2> (average value of r2) Å2
<r2> 185.721
(<r2>)1/2 13.628