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/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 B3PW91/cc-pVTZ
 hartrees
Energy at 0K-307.431300
Energy at 298.15K-307.437949
HF Energy-307.431300
Nuclear repulsion energy269.931664
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/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 3195 3072 0.26      
2 A1 3158 3036 7.62      
3 A1 2996 2881 7.67      
4 A1 1749 1681 309.37      
5 A1 1706 1640 6.39      
6 A1 1418 1364 3.01      
7 A1 1412 1358 25.57      
8 A1 1189 1143 7.33      
9 A1 967 930 6.31      
10 A1 894 859 11.21      
11 A1 779 749 1.85      
12 A1 505 486 3.05      
13 A2 1199 1153 0.00      
14 A2 1022 983 0.00      
15 A2 754 725 0.00      
16 A2 364 350 0.00      
17 B1 3007 2892 3.85      
18 B1 1038 998 0.01      
19 B1 945 908 31.30      
20 B1 867 834 28.78      
21 B1 574 552 24.38      
22 B1 321 308 2.85      
23 B1 125 120 0.87      
24 B2 3194 3071 13.56      
25 B2 3157 3036 12.39      
26 B2 1669 1604 3.00      
27 B2 1425 1371 34.00      
28 B2 1380 1327 0.74      
29 B2 1275 1226 26.97      
30 B2 1138 1095 7.75      
31 B2 1000 962 6.49      
32 B2 577 555 1.17      
33 B2 454 436 13.69      

Unscaled Zero Point Vibrational Energy (zpe) 22725.0 cm-1
Scaled (by 0.9616) Zero Point Vibrational Energy (zpe) 21852.3 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/cc-pVTZ
ABC
0.17637 0.08982 0.06015

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/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 -1.810
C3 0.000 1.250 0.329
C4 0.000 -1.250 0.329
C5 0.000 1.250 -1.006
C6 0.000 -1.250 -1.006
O7 0.000 0.000 2.328
H8 0.000 2.169 0.902
H9 0.000 -2.169 0.902
H10 0.000 2.188 -1.552
H11 0.000 -2.188 -1.552
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
C12.91801.47251.47252.45532.45531.22002.17862.17863.44403.44403.70053.7005
C22.91802.47732.47731.48631.48634.13803.47283.47282.20282.20281.09941.0994
C31.47252.47732.49911.33452.83322.35731.08343.46612.10203.91823.20253.2025
C41.47252.47732.49912.83321.33452.35733.46611.08343.91822.10203.20253.2025
C52.45531.48631.33452.83322.49933.56002.11763.91481.08553.48042.12422.1242
C62.45531.48632.83321.33452.49933.56003.91482.11763.48041.08552.12422.1242
O71.22004.13802.35732.35733.56003.56002.59552.59554.45424.45424.89514.8951
H82.17863.47281.08343.46612.11763.91482.59554.33772.45435.00024.11824.1182
H92.17863.47283.46611.08343.91482.11762.59554.33775.00022.45434.11824.1182
H103.44402.20282.10203.91821.08553.48044.45422.45435.00024.37522.53222.5322
H113.44402.20283.91822.10203.48041.08554.45425.00022.45434.37522.53222.5322
H123.70051.09943.20253.20252.12422.12424.89514.11824.11822.53222.53221.7274
H133.70051.09943.20253.20252.12422.12424.89514.11824.11822.53222.53221.7274

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 121.945 C1 C3 H8 116.116
C1 C4 C6 121.945 C1 C4 H9 116.116
C2 C5 C3 122.770 C2 C5 H10 116.997
C2 C6 C4 122.770 C2 C6 H11 116.997
C3 C1 C4 116.121 C3 C1 O7 121.940
C3 C5 H10 120.234 C4 C1 O7 121.940
C4 C6 H11 120.234 C5 C2 C6 114.450
C5 C2 H12 109.570 C5 C2 H13 109.570
C5 C3 H8 121.939 C6 C2 H12 109.570
C6 C2 H13 109.570 C6 C4 H9 121.939
H12 C2 H13 103.549
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.238      
2 C -0.069      
3 C -0.156      
4 C -0.156      
5 C -0.122      
6 C -0.122      
7 O -0.316      
8 H 0.125      
9 H 0.125      
10 H 0.124      
11 H 0.124      
12 H 0.103      
13 H 0.103      


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 -4.635 4.635
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -41.874 0.000 0.000
y 0.000 -36.129 0.000
z 0.000 0.000 -44.993
Traceless
 xyz
x -1.313 0.000 0.000
y 0.000 7.305 0.000
z 0.000 0.000 -5.992
Polar
3z2-r2-11.984
x2-y2-5.745
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.755 0.000 0.000
y 0.000 10.038 0.000
z 0.000 0.000 14.323


<r2> (average value of r2) Å2
<r2> 186.212
(<r2>)1/2 13.646