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All results from a given calculation for C6H4O2 (parabenzoquinone)

using model chemistry: B97D3/6-31+G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes D2H 1Ag
Energy calculated at B97D3/6-31+G**
 hartrees
Energy at 0K-381.236777
Energy at 298.15K-381.241035
HF Energy-381.236777
Nuclear repulsion energy320.490727
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 B97D3/6-31+G**
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 3161 3106 0.00      
2 Ag 1663 1635 0.00      
3 Ag 1626 1598 0.00      
4 Ag 1146 1127 0.00      
5 Ag 761 748 0.00      
6 Ag 446 438 0.00      
7 Au 982 965 0.00      
8 Au 318 313 0.00      
9 B1g 732 719 0.00      
10 B1u 3141 3087 5.30      
11 B1u 1663 1635 388.79      
12 B1u 1357 1333 3.34      
13 B1u 927 911 20.48      
14 B1u 741 728 0.49      
15 B2g 985 968 0.00      
16 B2g 765 752 0.00      
17 B2g 217 214 0.00      
18 B2u 3158 3104 12.51      
19 B2u 1594 1567 17.48      
20 B2u 1291 1268 73.35      
21 B2u 1063 1045 45.35      
22 B2u 401 394 21.47      
23 B3g 3141 3087 0.00      
24 B3g 1366 1342 0.00      
25 B3g 1207 1186 0.00      
26 B3g 588 578 0.00      
27 B3g 447 439 0.00      
28 B3u 877 862 76.22      
29 B3u 497 488 5.59      
30 B3u 89 87 14.16      

Unscaled Zero Point Vibrational Energy (zpe) 18173.8 cm-1
Scaled (by 0.9828) Zero Point Vibrational Energy (zpe) 17861.2 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 B97D3/6-31+G**
ABC
0.17390 0.05445 0.04147

See section I.F.4 to change rotational constant units
Geometric Data calculated at B97D3/6-31+G**

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 1.272 0.677
C4 0.000 -1.272 0.677
C5 0.000 -1.272 -0.677
C6 0.000 1.272 -0.677
O7 0.000 0.000 2.686
O8 0.000 0.000 -2.686
H9 0.000 2.190 1.264
H10 0.000 -2.190 1.264
H11 0.000 -2.190 -1.264
H12 0.000 2.190 -1.264

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 C6 O7 O8 H9 H10 H11 H12
C12.89831.48791.48792.47702.47701.23664.13502.19782.19783.48673.4867
C22.89832.47702.47701.48791.48794.13501.23663.48673.48672.19782.1978
C31.48792.47702.54302.88061.35312.37783.59481.09023.51103.96832.1469
C41.48792.47702.54301.35312.88062.37783.59483.51101.09022.14693.9683
C52.47701.48792.88061.35312.54303.59482.37783.96832.14691.09023.5110
C62.47701.48791.35312.88062.54303.59482.37782.14693.96833.51101.0902
O71.23664.13502.37782.37783.59483.59485.37162.61112.61114.51634.5163
O84.13501.23663.59483.59482.37782.37785.37164.51634.51632.61112.6111
H92.19783.48671.09023.51103.96832.14692.61114.51634.38005.05712.5279
H102.19783.48673.51101.09022.14693.96832.61114.51634.38002.52795.0571
H113.48672.19783.96832.14691.09023.51104.51632.61115.05712.52794.3800
H123.48672.19782.14693.96833.51101.09024.51632.61112.52795.05714.3800

picture of parabenzoquinone state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C3 C6 121.713 C1 C3 H9 115.492
C1 C4 C5 121.713 C1 C4 H10 115.492
C2 C5 C4 121.713 C2 C5 H11 115.492
C2 C6 C3 121.713 C2 C6 H12 115.492
C3 C1 C4 116.574 C3 C1 O7 121.713
C3 C6 H12 122.795 C4 C1 O7 121.713
C4 C5 H11 122.795 C5 C2 C6 116.574
C5 C2 O8 121.713 C5 C4 H10 122.795
C6 C2 O8 121.713 C6 C3 H9 122.795
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B97D3/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.184      
2 C -0.184      
3 C 0.127      
4 C 0.127      
5 C 0.127      
6 C 0.127      
7 O -0.406      
8 O -0.406      
9 H 0.168      
10 H 0.168      
11 H 0.168      
12 H 0.168      


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 -45.743 0.000 0.000
y 0.000 -37.529 0.000
z 0.000 0.000 -63.416
Traceless
 xyz
x 4.730 0.000 0.000
y 0.000 17.050 0.000
z 0.000 0.000 -21.780
Polar
3z2-r2-43.560
x2-y2-8.213
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.952 0.000 0.000
y 0.000 10.558 0.000
z 0.000 0.000 18.069


<r2> (average value of r2) Å2
<r2> 246.521
(<r2>)1/2 15.701