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: B3PW91/6-31+G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at B3PW91/6-31+G**
 hartrees
Energy at 0K-307.344616
Energy at 298.15K-307.351191
HF Energy-307.344616
Nuclear repulsion energy268.747778
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 B3PW91/6-31+G**
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 3218 3089 0.20      
2 A1 3180 3053 7.82      
3 A1 3011 2891 7.51      
4 A1 1753 1683 347.52      
5 A1 1707 1639 13.46      
6 A1 1423 1366 17.60      
7 A1 1413 1357 10.65      
8 A1 1192 1145 7.79      
9 A1 962 924 5.87      
10 A1 895 859 12.04      
11 A1 782 751 1.71      
12 A1 504 484 3.22      
13 A2 1196 1149 0.00      
14 A2 1009 969 0.00      
15 A2 748 718 0.00      
16 A2 360 345 0.00      
17 B1 3031 2910 3.06      
18 B1 1022 981 0.56      
19 B1 939 901 32.20      
20 B1 848 814 36.56      
21 B1 570 548 27.30      
22 B1 309 296 3.38      
23 B1 123 118 0.81      
24 B2 3216 3088 13.71      
25 B2 3180 3053 14.26      
26 B2 1673 1606 2.51      
27 B2 1429 1372 35.20      
28 B2 1381 1326 1.83      
29 B2 1279 1228 27.32      
30 B2 1142 1097 8.04      
31 B2 1001 961 6.73      
32 B2 577 554 1.33      
33 B2 452 434 14.07      

Unscaled Zero Point Vibrational Energy (zpe) 22761.8 cm-1
Scaled (by 0.9601) Zero Point Vibrational Energy (zpe) 21853.6 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 B3PW91/6-31+G**
ABC
0.17499 0.08900 0.05963

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/6-31+G**

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.110
C2 0.000 0.000 -1.819
C3 0.000 1.255 0.332
C4 0.000 -1.255 0.332
C5 0.000 1.255 -1.011
C6 0.000 -1.255 -1.011
O7 0.000 0.000 2.339
H8 0.000 2.176 0.907
H9 0.000 -2.176 0.907
H10 0.000 2.196 -1.558
H11 0.000 -2.196 -1.558
H12 0.868 0.000 -2.499
H13 -0.868 0.000 -2.499

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 C6 O7 H8 H9 H10 H11 H12 H13
C12.92931.47631.47632.46432.46431.22872.18582.18583.45553.45553.71193.7119
C22.92932.49042.49041.49231.49234.15803.48853.48852.21142.21141.10221.1022
C31.47632.49042.50931.34302.84602.36671.08653.47892.11143.93433.21593.2159
C41.47632.49042.50932.84601.34302.36673.47891.08653.93432.11143.21593.2159
C52.46431.49231.34302.84602.50903.57702.12823.93071.08883.49352.13092.1309
C62.46431.49232.84601.34302.50903.57703.93072.12823.49351.08882.13092.1309
O71.22874.15802.36672.36673.57703.57702.60502.60504.47294.47294.91504.9150
H82.18583.48851.08653.47892.12823.93072.60504.35282.46535.01944.13424.1342
H92.18583.48853.47891.08653.93072.12822.60504.35285.01942.46534.13424.1342
H103.45552.21142.11143.93431.08883.49354.47292.46535.01944.39182.54172.5417
H113.45552.21143.93432.11143.49351.08884.47295.01942.46534.39182.54172.5417
H123.71191.10223.21593.21592.13092.13094.91504.13424.13422.54172.54171.7352
H133.71191.10223.21593.21592.13092.13094.91504.13424.13422.54172.54171.7352

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 121.798 C1 C3 H8 116.230
C1 C4 C6 121.798 C1 C4 H9 116.230
C2 C5 C3 122.797 C2 C5 H10 117.050
C2 C6 C4 122.797 C2 C6 H11 117.050
C3 C1 C4 116.392 C3 C1 O7 121.804
C3 C5 H10 120.153 C4 C1 O7 121.804
C4 C6 H11 120.153 C5 C2 C6 114.418
C5 C2 H12 109.514 C5 C2 H13 109.514
C5 C3 H8 121.973 C6 C2 H12 109.514
C6 C2 H13 109.514 C6 C4 H9 121.973
H12 C2 H13 103.838
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.265      
2 C -0.658      
3 C 0.182      
4 C 0.182      
5 C -0.011      
6 C -0.011      
7 O -0.473      
8 H 0.166      
9 H 0.166      
10 H 0.164      
11 H 0.164      
12 H 0.196      
13 H 0.196      


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 -4.983 4.983
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -42.456 0.000 0.000
y 0.000 -36.132 0.000
z 0.000 0.000 -45.946
Traceless
 xyz
x -1.417 0.000 0.000
y 0.000 8.069 0.000
z 0.000 0.000 -6.652
Polar
3z2-r2-13.304
x2-y2-6.325
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.336 0.000 0.000
y 0.000 9.972 0.000
z 0.000 0.000 15.028


<r2> (average value of r2) Å2
<r2> 187.914
(<r2>)1/2 13.708