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All results from a given calculation for C6H4O2 (parabenzoquinone)

using model chemistry: wB97X-D/aug-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 wB97X-D/aug-cc-pVTZ
 hartrees
Energy at 0K-381.457287
Energy at 298.15K-381.461816
HF Energy-381.457287
Nuclear repulsion energy323.960158
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/aug-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 3221 3082 0.00      
2 Ag 1800 1722 0.00      
3 Ag 1720 1645 0.00      
4 Ag 1172 1121 0.00      
5 Ag 777 743 0.00      
6 Ag 456 436 0.00      
7 Au 1044 999 0.00      
8 Au 348 333 0.00      
9 B1g 775 741 0.00      
10 B1u 3202 3063 1.18      
11 B1u 1793 1715 513.90      
12 B1u 1390 1329 7.99      
13 B1u 956 915 15.31      
14 B1u 757 724 0.00      
15 B2g 1055 1009 0.00      
16 B2g 833 797 0.00      
17 B2g 228 218 0.00      
18 B2u 3219 3079 2.88      
19 B2u 1690 1617 17.21      
20 B2u 1331 1273 80.00      
21 B2u 1091 1044 41.59      
22 B2u 419 401 25.23      
23 B3g 3201 3063 0.00      
24 B3g 1407 1346 0.00      
25 B3g 1246 1192 0.00      
26 B3g 605 579 0.00      
27 B3g 455 435 0.00      
28 B3u 931 891 79.88      
29 B3u 526 503 4.50      
30 B3u 90 86 14.91      

Unscaled Zero Point Vibrational Energy (zpe) 18869.7 cm-1
Scaled (by 0.9566) Zero Point Vibrational Energy (zpe) 18050.7 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/aug-cc-pVTZ
ABC
0.17540 0.05594 0.04241

See section I.F.4 to change rotational constant units
Geometric Data calculated at wB97X-D/aug-cc-pVTZ

Point Group is D2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.443
C2 0.000 0.000 -1.443
C3 0.000 1.268 0.665
C4 0.000 -1.268 0.665
C5 0.000 -1.268 -0.665
C6 0.000 1.268 -0.665
O7 0.000 0.000 2.650
O8 0.000 0.000 -2.650
H9 0.000 2.178 1.250
H10 0.000 -2.178 1.250
H11 0.000 -2.178 -1.250
H12 0.000 2.178 -1.250

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 C6 O7 O8 H9 H10 H11 H12
C12.88631.48741.48742.45982.45981.20694.09322.18662.18663.46343.4634
C22.88632.45982.45981.48741.48744.09321.20693.46343.46342.18662.1866
C31.48742.45982.53512.86261.32972.35543.54901.08223.49493.94182.1200
C41.48742.45982.53511.32972.86262.35543.54903.49491.08222.12003.9418
C52.45981.48742.86261.32972.53513.54902.35543.94182.12001.08223.4949
C62.45981.48741.32972.86262.53513.54902.35542.12003.94183.49491.0822
O71.20694.09322.35542.35543.54903.54905.30012.58932.58934.46684.4668
O84.09321.20693.54903.54902.35542.35545.30014.46684.46682.58932.5893
H92.18663.46341.08223.49493.94182.12002.58934.46684.35605.02222.4994
H102.18663.46343.49491.08222.12003.94182.58934.46684.35602.49945.0222
H113.46342.18663.94182.12001.08223.49494.46682.58935.02222.49944.3560
H123.46342.18662.12003.94183.49491.08224.46682.58932.49945.02224.3560

picture of parabenzoquinone state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C3 C6 121.551 C1 C3 H9 115.733
C1 C4 C5 121.551 C1 C4 H10 115.733
C2 C5 C4 121.551 C2 C5 H11 115.733
C2 C6 C3 121.551 C2 C6 H12 115.733
C3 C1 C4 116.898 C3 C1 O7 121.551
C3 C6 H12 122.716 C4 C1 O7 121.551
C4 C5 H11 122.716 C5 C2 C6 116.898
C5 C2 O8 121.551 C5 C4 H10 122.716
C6 C2 O8 121.551 C6 C3 H9 122.716
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at wB97X-D/aug-cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 1.181      
2 C 1.181      
3 C -0.696      
4 C -0.696      
5 C -0.696      
6 C -0.696      
7 O -1.008      
8 O -1.008      
9 H 0.609      
10 H 0.609      
11 H 0.609      
12 H 0.609      


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 -45.357 0.000 0.000
y 0.000 -37.124 0.000
z 0.000 0.000 -62.226
Traceless
 xyz
x 4.318 0.000 0.000
y 0.000 16.668 0.000
z 0.000 0.000 -20.986
Polar
3z2-r2-41.971
x2-y2-8.233
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.493 0.000 0.000
y 0.000 10.349 0.000
z 0.000 0.000 16.993


<r2> (average value of r2) Å2
<r2> 241.408
(<r2>)1/2 15.537