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All results from a given calculation for C6H4O2 (parabenzoquinone)

using model chemistry: B97D3/cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes D2H 1Ag
Energy calculated at B97D3/cc-pVTZ
 hartrees
Energy at 0K-381.351006
Energy at 298.15K-381.355354
HF Energy-381.351006
Nuclear repulsion energy321.972206
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 B97D3/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 Ag 3143 3099 0.00      
2 Ag 1658 1634 0.00      
3 Ag 1627 1605 0.00      
4 Ag 1143 1127 0.00      
5 Ag 758 747 0.00      
6 Ag 448 442 0.00      
7 Au 1001 987 0.00      
8 Au 323 318 0.00      
9 B1g 742 732 0.00      
10 B1u 3123 3079 6.26      
11 B1u 1663 1639 332.15      
12 B1u 1357 1338 4.60      
13 B1u 932 919 20.51      
14 B1u 739 729 0.22      
15 B2g 1011 997 0.00      
16 B2g 801 790 0.00      
17 B2g 226 223 0.00      
18 B2u 3141 3097 13.27      
19 B2u 1592 1570 17.18      
20 B2u 1285 1267 70.00      
21 B2u 1060 1045 49.62      
22 B2u 403 397 20.63      
23 B3g 3123 3080 0.00      
24 B3g 1364 1345 0.00      
25 B3g 1203 1186 0.00      
26 B3g 589 581 0.00      
27 B3g 448 442 0.00      
28 B3u 895 883 67.54      
29 B3u 501 494 4.61      
30 B3u 89 88 12.57      

Unscaled Zero Point Vibrational Energy (zpe) 18193.8 cm-1
Scaled (by 0.986) Zero Point Vibrational Energy (zpe) 17939.0 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 B97D3/cc-pVTZ
ABC
0.17544 0.05493 0.04184

See section I.F.4 to change rotational constant units
Geometric Data calculated at B97D3/cc-pVTZ

Point Group is D2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.446
C2 0.000 0.000 -1.446
C3 0.000 1.266 0.672
C4 0.000 -1.266 0.672
C5 0.000 -1.266 -0.672
C6 0.000 1.266 -0.672
O7 0.000 0.000 2.673
O8 0.000 0.000 -2.673
H9 0.000 2.181 1.259
H10 0.000 -2.181 1.259
H11 0.000 -2.181 -1.259
H12 0.000 2.181 -1.259

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 C6 O7 O8 H9 H10 H11 H12
C12.89161.48361.48362.46742.46741.22764.11922.18882.18883.47413.4741
C22.89162.46742.46741.48361.48364.11921.22763.47413.47412.18882.1888
C31.48362.46742.53172.86641.34422.36803.57691.08683.49623.95062.1365
C41.48362.46742.53171.34422.86642.36803.57693.49621.08682.13653.9506
C52.46741.48362.86641.34422.53173.57692.36803.95062.13651.08683.4962
C62.46741.48361.34422.86642.53173.57692.36802.13653.95063.49621.0868
O71.22764.11922.36802.36803.57693.57695.34682.59962.59964.49624.4962
O84.11921.22763.57693.57692.36802.36805.34684.49624.49622.59962.5996
H92.18883.47411.08683.49623.95062.13652.59964.49624.36165.03582.5171
H102.18883.47413.49621.08682.13653.95062.59964.49624.36162.51715.0358
H113.47412.18883.95062.13651.08683.49624.49622.59965.03582.51714.3616
H123.47412.18882.13653.95063.49621.08684.49622.59962.51715.03584.3616

picture of parabenzoquinone state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C3 C6 121.776 C1 C3 H9 115.395
C1 C4 C5 121.776 C1 C4 H10 115.395
C2 C5 C4 121.776 C2 C5 H11 115.395
C2 C6 C3 121.776 C2 C6 H12 115.395
C3 C1 C4 116.448 C3 C1 O7 121.776
C3 C6 H12 122.829 C4 C1 O7 121.776
C4 C5 H11 122.829 C5 C2 C6 116.448
C5 C2 O8 121.776 C5 C4 H10 122.829
C6 C2 O8 121.776 C6 C3 H9 122.829
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B97D3/cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.232      
2 C 0.232      
3 C -0.111      
4 C -0.111      
5 C -0.111      
6 C -0.111      
7 O -0.258      
8 O -0.258      
9 H 0.124      
10 H 0.124      
11 H 0.124      
12 H 0.124      


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 -45.022 0.000 0.000
y 0.000 -37.591 0.000
z 0.000 0.000 -61.101
Traceless
 xyz
x 4.324 0.000 0.000
y 0.000 15.470 0.000
z 0.000 0.000 -19.794
Polar
3z2-r2-39.588
x2-y2-7.431
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.225 0.000 0.000
y 0.000 10.416 0.000
z 0.000 0.000 16.657


<r2> (average value of r2) Å2
<r2> 244.014
(<r2>)1/2 15.621