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: B2PLYP/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 B2PLYP/cc-pVTZ
 hartrees
Energy at 0K-307.295498
Energy at 298.15K-307.302156
HF Energy-306.908664
Nuclear repulsion energy269.449260
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 B2PLYP/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 3212 3082 0.15      
2 A1 3175 3047 7.29      
3 A1 3015 2893 8.71      
4 A1 1724 1654 224.02      
5 A1 1683 1614 37.51      
6 A1 1442 1383 18.06      
7 A1 1424 1367 4.02      
8 A1 1196 1148 7.44      
9 A1 971 932 5.91      
10 A1 890 854 9.18      
11 A1 777 745 2.26      
12 A1 506 485 2.65      
13 A2 1214 1164 0.00      
14 A2 1021 980 0.00      
15 A2 757 726 0.00      
16 A2 365 350 0.00      
17 B1 3029 2906 5.24      
18 B1 1036 994 0.19      
19 B1 957 918 27.07      
20 B1 864 829 32.46      
21 B1 580 556 22.35      
22 B1 318 305 2.42      
23 B1 125 120 0.97      
24 B2 3211 3081 13.77      
25 B2 3175 3046 12.23      
26 B2 1656 1589 3.15      
27 B2 1431 1373 33.92      
28 B2 1389 1332 0.45      
29 B2 1283 1231 27.10      
30 B2 1147 1100 8.23      
31 B2 1001 961 6.04      
32 B2 579 555 1.18      
33 B2 454 435 13.62      

Unscaled Zero Point Vibrational Energy (zpe) 22801.8 cm-1
Scaled (by 0.9594) Zero Point Vibrational Energy (zpe) 21876.0 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 B2PLYP/cc-pVTZ
ABC
0.17580 0.08943 0.05991

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP/cc-pVTZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.108
C2 0.000 0.000 -1.817
C3 0.000 1.252 0.330
C4 0.000 -1.252 0.330
C5 0.000 1.252 -1.008
C6 0.000 -1.252 -1.008
O7 0.000 0.000 2.333
H8 0.000 2.169 0.902
H9 0.000 -2.169 0.902
H10 0.000 2.189 -1.551
H11 0.000 -2.189 -1.551
H12 0.864 0.000 -2.491
H13 -0.864 0.000 -2.491

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 C6 O7 H8 H9 H10 H11 H12 H13
C12.92501.47391.47392.45902.45901.22492.17872.17873.44453.44453.70183.7018
C22.92502.48502.48501.49081.49084.14993.47763.47762.20522.20521.09641.0964
C31.47392.48502.50341.33802.83912.36211.08083.46802.10173.92143.20513.2051
C41.47392.48502.50342.83911.33802.36213.46801.08083.92142.10173.20513.2051
C52.45901.49081.33802.83912.50473.56812.11823.91811.08283.48412.12502.1250
C62.45901.49082.83911.33802.50473.56813.91812.11823.48411.08282.12502.1250
O71.22494.14992.36212.36213.56813.56812.59872.59874.45874.45874.90124.9012
H82.17873.47761.08083.46802.11823.91812.59874.33782.45285.00094.11864.1186
H92.17873.47763.46801.08083.91812.11822.59874.33785.00092.45284.11864.1186
H103.44452.20522.10173.92141.08283.48414.45872.45285.00094.37832.53442.5344
H113.44452.20523.92142.10173.48411.08284.45875.00092.45284.37832.53442.5344
H123.70181.09643.20513.20512.12502.12504.90124.11864.11862.53442.53441.7287
H133.70181.09643.20513.20512.12502.12504.90124.11864.11862.53442.53441.7287

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 121.901 C1 C3 H8 116.192
C1 C4 C6 121.901 C1 C4 H9 116.192
C2 C5 C3 122.826 C2 C5 H10 117.043
C2 C6 C4 122.826 C2 C6 H11 117.043
C3 C1 C4 116.255 C3 C1 O7 121.873
C3 C5 H10 120.131 C4 C1 O7 121.873
C4 C6 H11 120.131 C5 C2 C6 114.292
C5 C2 H12 109.496 C5 C2 H13 109.496
C5 C3 H8 121.907 C6 C2 H12 109.496
C6 C2 H13 109.496 C6 C4 H9 121.907
H12 C2 H13 104.070
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B2PLYP/cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.233      
2 C -0.128      
3 C -0.184      
4 C -0.184      
5 C -0.124      
6 C -0.124      
7 O -0.305      
8 H 0.145      
9 H 0.145      
10 H 0.145      
11 H 0.145      
12 H 0.118      
13 H 0.118      


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 -4.512 4.512
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -42.357 0.000 0.000
y 0.000 -36.792 0.000
z 0.000 0.000 -45.667
Traceless
 xyz
x -1.127 0.000 0.000
y 0.000 7.220 0.000
z 0.000 0.000 -6.092
Polar
3z2-r2-12.185
x2-y2-5.564
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.731 0.000 0.000
y 0.000 9.945 0.000
z 0.000 0.000 14.206


<r2> (average value of r2) Å2
<r2> 187.166
(<r2>)1/2 13.681