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: PBEPBE/aug-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 PBEPBE/aug-cc-pVDZ
 hartrees
Energy at 0K-307.103570
Energy at 298.15K-307.109988
HF Energy-307.103570
Nuclear repulsion energy266.996805
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 PBEPBE/aug-cc-pVDZ
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 3127 3107 0.20      
2 A1 3090 3071 9.76      
3 A1 2925 2907 8.18      
4 A1 1663 1653 192.07      
5 A1 1630 1620 111.62      
6 A1 1356 1348 0.38      
7 A1 1345 1336 31.74      
8 A1 1144 1137 5.95      
9 A1 927 922 5.29      
10 A1 877 871 13.29      
11 A1 762 758 1.17      
12 A1 488 485 3.16      
13 A2 1137 1130 0.00      
14 A2 964 958 0.00      
15 A2 717 713 0.00      
16 A2 348 346 0.00      
17 B1 2939 2921 2.63      
18 B1 974 968 0.04      
19 B1 897 892 32.28      
20 B1 827 822 19.69      
21 B1 546 543 25.98      
22 B1 301 299 2.62      
23 B1 117 116 0.81      
24 B2 3125 3106 16.00      
25 B2 3090 3071 14.20      
26 B2 1607 1597 3.59      
27 B2 1373 1365 31.87      
28 B2 1322 1314 1.02      
29 B2 1227 1220 19.04      
30 B2 1092 1086 5.49      
31 B2 971 965 6.43      
32 B2 559 555 1.57      
33 B2 435 432 11.53      

Unscaled Zero Point Vibrational Energy (zpe) 21950.0 cm-1
Scaled (by 0.9939) Zero Point Vibrational Energy (zpe) 21816.1 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 PBEPBE/aug-cc-pVDZ
ABC
0.17366 0.08763 0.05886

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.117
C2 0.000 0.000 -1.829
C3 0.000 1.258 0.334
C4 0.000 -1.258 0.334
C5 0.000 1.259 -1.021
C6 0.000 -1.259 -1.021
O7 0.000 0.000 2.359
H8 0.000 2.191 0.914
H9 0.000 -2.191 0.914
H10 0.000 2.210 -1.574
H11 0.000 -2.210 -1.574
H12 0.872 0.000 -2.522
H13 -0.872 0.000 -2.522

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 C6 O7 H8 H9 H10 H11 H12 H13
C12.94571.48161.48162.48072.48071.24172.20082.20083.48283.48283.74193.7419
C22.94572.50222.50221.49591.49594.18743.51093.51092.22502.22501.11421.1142
C31.48162.50222.51601.35482.85832.38351.09903.49792.13323.95893.24043.2404
C41.48162.50222.51602.85831.35482.38353.49791.09903.95892.13323.24043.2404
C52.48071.49591.35482.85832.51773.60612.14793.95581.10113.51322.14462.1446
C62.48071.49592.85831.35482.51773.60613.95582.14793.51321.10112.14462.1446
O71.24174.18742.38352.38353.60613.60612.62462.62464.51174.51174.95784.9578
H82.20083.51091.09903.49792.14793.95582.62464.38292.48895.05674.16784.1678
H92.20083.51093.49791.09903.95582.14792.62464.38295.05672.48894.16784.1678
H103.48282.22502.13323.95891.10113.51324.51172.48895.05674.42092.55822.5582
H113.48282.22503.95892.13323.51321.10114.51175.05672.48894.42092.55822.5582
H123.74191.11423.24043.24042.14462.14464.95784.16784.16782.55822.55821.7449
H133.74191.11423.24043.24042.14462.14464.95784.16784.16782.55822.55821.7449

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 121.926 C1 C3 H8 116.251
C1 C4 C6 121.926 C1 C4 H9 116.251
C2 C5 C3 122.663 C2 C5 H10 117.098
C2 C6 C4 122.663 C2 C6 H11 117.098
C3 C1 C4 116.219 C3 C1 O7 121.890
C3 C5 H10 120.239 C4 C1 O7 121.890
C4 C6 H11 120.239 C5 C2 C6 114.602
C5 C2 H12 109.635 C5 C2 H13 109.635
C5 C3 H8 121.823 C6 C2 H12 109.635
C6 C2 H13 109.635 C6 C4 H9 121.823
H12 C2 H13 103.073
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/aug-cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.050      
2 C 0.398      
3 C 0.915      
4 C 0.915      
5 C 0.570      
6 C 0.570      
7 O -0.604      
8 H -0.681      
9 H -0.681      
10 H -0.640      
11 H -0.640      
12 H -0.087      
13 H -0.087      


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 -4.859 4.859
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -42.615 0.000 0.000
y 0.000 -36.854 0.000
z 0.000 0.000 -46.276
Traceless
 xyz
x -1.050 0.000 0.000
y 0.000 7.592 0.000
z 0.000 0.000 -6.542
Polar
3z2-r2-13.083
x2-y2-5.762
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 7.170 0.000 0.000
y 0.000 11.523 0.000
z 0.000 0.000 15.937


<r2> (average value of r2) Å2
<r2> 190.330
(<r2>)1/2 13.796