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All results from a given calculation for C6H4O2 (parabenzoquinone)

using model chemistry: wB97X-D/6-311G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes D2H 1Ag
Energy calculated at wB97X-D/6-311G**
 hartrees
Energy at 0K-381.413750
Energy at 298.15K-381.418238
HF Energy-381.413750
Nuclear repulsion energy323.307282
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 wB97X-D/6-311G**
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 Ag 3220 3080 0.00      
2 Ag 1816 1737 0.00      
3 Ag 1722 1647 0.00      
4 Ag 1169 1118 0.00      
5 Ag 775 741 0.00      
6 Ag 456 436 0.00      
7 Au 1039 994 0.00      
8 Au 343 328 0.00      
9 B1g 766 733 0.00      
10 B1u 3199 3060 1.86      
11 B1u 1810 1731 443.60      
12 B1u 1382 1322 9.01      
13 B1u 949 908 16.48      
14 B1u 756 724 0.14      
15 B2g 1035 990 0.00      
16 B2g 812 776 0.00      
17 B2g 226 216 0.00      
18 B2u 3217 3077 4.15      
19 B2u 1693 1619 16.56      
20 B2u 1326 1268 85.31      
21 B2u 1090 1042 53.37      
22 B2u 419 400 26.66      
23 B3g 3199 3060 0.00      
24 B3g 1404 1343 0.00      
25 B3g 1235 1182 0.00      
26 B3g 605 579 0.00      
27 B3g 454 434 0.00      
28 B3u 921 881 91.16      
29 B3u 521 499 4.66      
30 B3u 92 88 13.36      

Unscaled Zero Point Vibrational Energy (zpe) 18824.7 cm-1
Scaled (by 0.9565) Zero Point Vibrational Energy (zpe) 18005.8 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 wB97X-D/6-311G**
ABC
0.17484 0.05566 0.04222

See section I.F.4 to change rotational constant units
Geometric Data calculated at wB97X-D/6-311G**

Point Group is D2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.449
C2 0.000 0.000 -1.449
C3 0.000 1.269 0.667
C4 0.000 -1.269 0.667
C5 0.000 -1.269 -0.667
C6 0.000 1.269 -0.667
O7 0.000 0.000 2.656
O8 0.000 0.000 -2.656
H9 0.000 2.181 1.254
H10 0.000 -2.181 1.254
H11 0.000 -2.181 -1.254
H12 0.000 2.181 -1.254

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 C6 O7 O8 H9 H10 H11 H12
C12.89761.49081.49082.46732.46731.20754.10512.19012.19013.47333.4733
C22.89762.46732.46731.49081.49084.10511.20753.47333.47332.19012.1901
C31.49082.46732.53872.86781.33382.35993.55741.08473.50033.94942.1265
C41.49082.46732.53871.33382.86782.35993.55743.50031.08472.12653.9494
C52.46731.49082.86781.33382.53873.55742.35993.94942.12651.08473.5003
C62.46731.49081.33382.86782.53873.55742.35992.12653.94943.50031.0847
O71.20754.10512.35992.35993.55743.55745.31262.59322.59324.47774.4777
O84.10511.20753.55743.55742.35992.35995.31264.47774.47772.59322.5932
H92.19013.47331.08473.50033.94942.12652.59324.47774.36285.03232.5081
H102.19013.47333.50031.08472.12653.94942.59324.47774.36282.50815.0323
H113.47332.19013.94942.12651.08473.50034.47772.59325.03232.50814.3628
H123.47332.19012.12653.94943.50031.08474.47772.59322.50815.03234.3628

picture of parabenzoquinone state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C3 C6 121.632 C1 C3 H9 115.594
C1 C4 C5 121.632 C1 C4 H10 115.594
C2 C5 C4 121.632 C2 C5 H11 115.594
C2 C6 C3 121.632 C2 C6 H12 115.594
C3 C1 C4 116.735 C3 C1 O7 121.632
C3 C6 H12 122.774 C4 C1 O7 121.632
C4 C5 H11 122.774 C5 C2 C6 116.735
C5 C2 O8 121.632 C5 C4 H10 122.774
C6 C2 O8 121.632 C6 C3 H9 122.774
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at wB97X-D/6-311G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.223      
2 C 0.223      
3 C -0.118      
4 C -0.118      
5 C -0.118      
6 C -0.118      
7 O -0.284      
8 O -0.284      
9 H 0.148      
10 H 0.148      
11 H 0.148      
12 H 0.148      


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 0.000 0.000
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -45.316 0.000 0.000
y 0.000 -37.203 0.000
z 0.000 0.000 -60.974
Traceless
 xyz
x 3.773 0.000 0.000
y 0.000 15.942 0.000
z 0.000 0.000 -19.715
Polar
3z2-r2-39.429
x2-y2-8.113
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.407 0.000 0.000
y 0.000 9.004 0.000
z 0.000 0.000 15.496


<r2> (average value of r2) Å2
<r2> 242.111
(<r2>)1/2 15.560