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: PBEPBEultrafine/cc-pVDZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at PBEPBEultrafine/cc-pVDZ
 hartrees
Energy at 0K-307.082576
Energy at 298.15K-307.089024
HF Energy-307.082576
Nuclear repulsion energy266.956358
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 PBEPBEultrafine/cc-pVDZ
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A1 3127 3109 0.58      
2 A1 3089 3071 9.05      
3 A1 2924 2907 8.86      
4 A1 1692 1682 219.81      
5 A1 1652 1643 12.39      
6 A1 1357 1349 0.06      
7 A1 1336 1328 26.55      
8 A1 1137 1131 5.59      
9 A1 929 924 6.80      
10 A1 878 873 11.50      
11 A1 761 757 0.56      
12 A1 490 487 2.74      
13 A2 1142 1136 0.00      
14 A2 977 971 0.00      
15 A2 727 723 0.00      
16 A2 348 346 0.00      
17 B1 2939 2922 4.19      
18 B1 988 983 0.10      
19 B1 903 898 22.74      
20 B1 836 831 18.95      
21 B1 554 551 21.91      
22 B1 306 304 3.48      
23 B1 127 127 0.35      
24 B2 3126 3108 17.29      
25 B2 3088 3070 13.89      
26 B2 1619 1610 3.16      
27 B2 1375 1367 33.94      
28 B2 1324 1316 1.79      
29 B2 1219 1211 17.46      
30 B2 1091 1085 8.16      
31 B2 975 970 7.61      
32 B2 559 556 1.31      
33 B2 436 434 11.95      

Unscaled Zero Point Vibrational Energy (zpe) 22015.9 cm-1
Scaled (by 0.9942) Zero Point Vibrational Energy (zpe) 21888.2 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 PBEPBEultrafine/cc-pVDZ
ABC
0.17361 0.08758 0.05884

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.120
C2 0.000 0.000 -1.828
C3 0.000 1.257 0.333
C4 0.000 -1.257 0.333
C5 0.000 1.260 -1.021
C6 0.000 -1.260 -1.021
O7 0.000 0.000 2.358
H8 0.000 2.190 0.918
H9 0.000 -2.190 0.918
H10 0.000 2.213 -1.576
H11 0.000 -2.213 -1.576
H12 0.874 0.000 -2.524
H13 -0.874 0.000 -2.524

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 C6 O7 H8 H9 H10 H11 H12 H13
C12.94851.48331.48332.48462.48461.23812.19912.19913.48843.48843.74783.7478
C22.94852.50022.50021.49631.49634.18663.51193.51192.22692.22691.11711.1171
C31.48332.50022.51421.35412.85822.38381.10063.49602.13533.96053.24143.2414
C41.48332.50022.51422.85821.35412.38383.49601.10063.96052.13533.24143.2414
C52.48461.49631.35412.85822.51993.60682.15003.95711.10283.51672.14712.1471
C62.48461.49632.85821.35412.51993.60683.95712.15003.51671.10282.14712.1471
O71.23814.18662.38382.38383.60683.60682.62132.62134.51444.51444.96014.9601
H82.19913.51191.10063.49602.15003.95712.62134.37942.49415.05974.17174.1717
H92.19913.51193.49601.10063.95712.15002.62134.37945.05972.49414.17174.1717
H103.48842.22692.13533.96051.10283.51674.51442.49415.05974.42532.56072.5607
H113.48842.22693.96052.13533.51671.10284.51445.05972.49414.42532.56072.5607
H123.74781.11713.24143.24142.14712.14714.96014.17174.17172.56072.56071.7477
H133.74781.11713.24143.24142.14712.14714.96014.17174.17172.56072.56071.7477

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 122.181 C1 C3 H8 115.864
C1 C4 C6 122.181 C1 C4 H9 115.864
C2 C5 C3 122.521 C2 C5 H10 117.116
C2 C6 C4 122.521 C2 C6 H11 117.116
C3 C1 C4 115.880 C3 C1 O7 122.060
C3 C5 H10 120.363 C4 C1 O7 122.060
C4 C6 H11 120.363 C5 C2 C6 114.716
C5 C2 H12 109.635 C5 C2 H13 109.635
C5 C3 H8 121.955 C6 C2 H12 109.635
C6 C2 H13 109.635 C6 C4 H9 121.955
H12 C2 H13 102.933
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBEultrafine/cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.052      
2 C 0.038      
3 C 0.025      
4 C 0.025      
5 C -0.033      
6 C -0.033      
7 O -0.208      
8 H -0.007      
9 H -0.007      
10 H 0.002      
11 H 0.002      
12 H 0.072      
13 H 0.072      


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 -4.276 4.276
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -41.804 0.000 0.000
y 0.000 -36.650 0.000
z 0.000 0.000 -44.017
Traceless
 xyz
x -1.471 0.000 0.000
y 0.000 6.261 0.000
z 0.000 0.000 -4.790
Polar
3z2-r2-9.580
x2-y2-5.154
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.735 0.000 0.000
y 0.000 10.116 0.000
z 0.000 0.000 14.170


<r2> (average value of r2) Å2
<r2> 189.741
(<r2>)1/2 13.775