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All results from a given calculation for C2H2O2 (Ethanedial)

using model chemistry: wB97X-D/STO-3G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2H 1Ag
Energy calculated at wB97X-D/STO-3G
 hartrees
Energy at 0K-224.714746
Energy at 298.15K 
HF Energy-224.714746
Nuclear repulsion energy98.568794
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/STO-3G
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 3245 3245 0.00 91.82 0.34 0.51
2 Ag 1857 1857 0.00 22.55 0.22 0.36
3 Ag 1459 1459 0.00 17.82 0.75 0.86
4 Ag 1051 1051 0.00 8.71 0.64 0.78
5 Ag 552 552 0.00 3.36 0.44 0.61
6 Au 779 779 5.93 0.00 0.00 0.00
7 Au 139 139 10.09 0.00 0.00 0.00
8 Bg 1016 1016 0.00 3.06 0.75 0.86
9 Bu 3246 3246 43.83 0.00 0.00 0.00
10 Bu 1833 1833 14.73 0.00 0.00 0.00
11 Bu 1410 1410 34.75 0.00 0.00 0.00
12 Bu 329 329 19.67 0.00 0.00 0.00

Unscaled Zero Point Vibrational Energy (zpe) 8458.3 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 8458.3 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/STO-3G
ABC
1.82424 0.14760 0.13655

See section I.F.4 to change rotational constant units
Geometric Data calculated at wB97X-D/STO-3G

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.332 0.710 0.000
C2 0.332 -0.710 0.000
H3 -1.455 0.683 0.000
H4 1.455 -0.683 0.000
O5 0.332 1.768 0.000
O6 -0.332 -1.768 0.000

Atom - Atom Distances (Å)
  C1 C2 H3 H4 O5 O6
C11.56811.12352.26581.24832.4782
C21.56812.26581.12352.47821.2483
H31.12352.26583.21462.09022.6960
H42.26581.12353.21462.69602.0902
O51.24832.47822.09022.69603.5973
O62.47821.24832.69602.09023.5973

picture of Ethanedial state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H4 113.637 C1 C2 O6 122.863
C2 C1 H3 113.637 C2 C1 O5 122.863
H3 C1 O5 123.500 H4 C2 O6 123.500
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at wB97X-D/STO-3G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.076      
2 C 0.076      
3 H 0.076      
4 H 0.076      
5 O -0.152      
6 O -0.152      


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 -19.333 -2.082 0.000
y -2.082 -25.704 0.000
z 0.000 0.000 -19.175
Traceless
 xyz
x 3.107 -2.082 0.000
y -2.082 -6.450 0.000
z 0.000 0.000 3.343
Polar
3z2-r26.686
x2-y26.371
xy-2.082
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.117 0.518 0.000
y 0.518 3.266 0.000
z 0.000 0.000 0.726


<r2> (average value of r2) Å2
<r2> 77.675
(<r2>)1/2 8.813