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: B3LYPultrafine/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 B3LYPultrafine/6-31G**
 hartrees
Energy at 0K-307.451942
Energy at 298.15K-307.458551
HF Energy-307.451942
Nuclear repulsion energy268.402288
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 B3LYPultrafine/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 3206 3080 0.51      
2 A1 3168 3044 8.48      
3 A1 2997 2879 12.39      
4 A1 1761 1692 268.83      
5 A1 1711 1644 3.13      
6 A1 1443 1386 14.29      
7 A1 1421 1366 2.84      
8 A1 1196 1149 5.72      
9 A1 964 926 6.03      
10 A1 886 851 8.27      
11 A1 775 744 1.43      
12 A1 506 486 2.99      
13 A2 1202 1155 0.00      
14 A2 1012 973 0.00      
15 A2 751 722 0.00      
16 A2 362 348 0.00      
17 B1 3009 2891 9.29      
18 B1 1030 989 0.09      
19 B1 954 917 18.68      
20 B1 856 823 34.73      
21 B1 578 556 16.50      
22 B1 318 305 3.66      
23 B1 133 128 0.91      
24 B2 3204 3079 18.79      
25 B2 3167 3043 16.94      
26 B2 1674 1609 2.70      
27 B2 1424 1368 32.21      
28 B2 1383 1329 1.45      
29 B2 1276 1226 29.89      
30 B2 1144 1099 9.85      
31 B2 995 956 5.46      
32 B2 577 555 0.97      
33 B2 453 435 14.74      

Unscaled Zero Point Vibrational Energy (zpe) 22767.9 cm-1
Scaled (by 0.9608) Zero Point Vibrational Energy (zpe) 21875.4 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 B3LYPultrafine/6-31G**
ABC
0.17428 0.08879 0.05945

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYPultrafine/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 -1.823
C3 0.000 1.257 0.331
C4 0.000 -1.257 0.331
C5 0.000 1.258 -1.011
C6 0.000 -1.258 -1.011
O7 0.000 0.000 2.341
H8 0.000 2.177 0.908
H9 0.000 -2.177 0.908
H10 0.000 2.198 -1.559
H11 0.000 -2.198 -1.559
H12 0.867 0.000 -2.503
H13 -0.867 0.000 -2.503

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 C6 O7 H8 H9 H10 H11 H12 H13
C12.93621.48051.48052.46882.46881.22792.18662.18663.46043.46043.71923.7192
C22.93622.49372.49371.49771.49774.16403.49233.49232.21392.21391.10241.1024
C31.48052.49372.51381.34162.85072.37081.08603.48202.11163.93833.21953.2195
C41.48052.49372.51382.85071.34162.37083.48201.08603.93832.11163.21953.2195
C52.46881.49771.34162.85072.51683.58032.12713.93471.08823.49982.13632.1363
C62.46881.49772.85071.34162.51683.58033.93472.12713.49981.08822.13632.1363
O71.22794.16402.37082.37083.58033.58032.60642.60644.47724.47724.92154.9215
H82.18663.49231.08603.48202.12713.93472.60644.35392.46725.02284.13864.1386
H92.18663.49233.48201.08603.93472.12712.60644.35395.02282.46724.13864.1386
H103.46042.21392.11163.93831.08823.49984.47722.46725.02284.39642.54472.5447
H113.46042.21393.93832.11163.49981.08824.47725.02282.46724.39642.54472.5447
H123.71921.10243.21953.21952.13632.13634.92154.13864.13862.54472.54471.7347
H133.71921.10243.21953.21952.13632.13634.92154.13864.13862.54472.54471.7347

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 121.963 C1 C3 H8 116.008
C1 C4 C6 121.963 C1 C4 H9 116.008
C2 C5 C3 122.777 C2 C5 H10 116.887
C2 C6 C4 122.777 C2 C6 H11 116.887
C3 C1 C4 116.200 C3 C1 O7 121.900
C3 C5 H10 120.336 C4 C1 O7 121.900
C4 C6 H11 120.336 C5 C2 C6 114.321
C5 C2 H12 109.555 C5 C2 H13 109.555
C5 C3 H8 122.029 C6 C2 H12 109.555
C6 C2 H13 109.555 C6 C4 H9 122.029
H12 C2 H13 103.772
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYPultrafine/6-31G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.397      
2 C -0.256      
3 C -0.094      
4 C -0.094      
5 C -0.076      
6 C -0.076      
7 O -0.496      
8 H 0.103      
9 H 0.103      
10 H 0.103      
11 H 0.103      
12 H 0.140      
13 H 0.140      


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 -4.457 4.457
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -41.314 0.000 0.000
y 0.000 -35.970 0.000
z 0.000 0.000 -44.766
Traceless
 xyz
x -0.946 0.000 0.000
y 0.000 7.070 0.000
z 0.000 0.000 -6.125
Polar
3z2-r2-12.249
x2-y2-5.344
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.357 0.000 0.000
y 0.000 9.087 0.000
z 0.000 0.000 13.559


<r2> (average value of r2) Å2
<r2> 187.855
(<r2>)1/2 13.706