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All results from a given calculation for C2H2O2 (Ethanedial)

using model chemistry: B2PLYP=FULL/6-31G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2H 1Ag
Energy calculated at B2PLYP=FULL/6-31G**
 hartrees
Energy at 0K-227.619913
Energy at 298.15K 
HF Energy-227.410279
Nuclear repulsion energy101.570736
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 B2PLYP=FULL/6-31G**
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 3017 3017 0.00 220.87 0.28 0.43
2 Ag 1797 1797 0.00 36.01 0.53 0.69
3 Ag 1396 1396 0.00 13.52 0.49 0.66
4 Ag 1095 1095 0.00 9.64 0.71 0.83
5 Ag 562 562 0.00 4.78 0.36 0.53
6 Au 829 829 0.84 0.00 0.00 0.00
7 Au 149 149 29.75 0.00 0.00 0.00
8 Bg 1076 1076 0.00 8.98 0.75 0.86
9 Bu 3011 3011 135.97 0.00 0.00 0.00
10 Bu 1784 1784 135.83 0.00 0.00 0.00
11 Bu 1356 1356 8.32 0.00 0.00 0.00
12 Bu 333 333 51.20 0.00 0.00 0.00

Unscaled Zero Point Vibrational Energy (zpe) 8202.2 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 8202.2 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 B2PLYP=FULL/6-31G**
ABC
1.86094 0.15888 0.14638

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP=FULL/6-31G**

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.330 0.684 0.000
C2 0.330 -0.684 0.000
H3 -1.434 0.666 0.000
H4 1.434 -0.666 0.000
O5 0.330 1.703 0.000
O6 -0.330 -1.703 0.000

Atom - Atom Distances (Å)
  C1 C2 H3 H4 O5 O6
C11.51791.10452.22121.21462.3869
C21.51792.22121.10452.38691.2146
H31.10452.22123.16272.04642.6142
H42.22121.10453.16272.61422.0464
O51.21462.38692.04642.61423.4700
O62.38691.21462.61422.04643.4700

picture of Ethanedial state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H4 114.860 C1 C2 O6 121.336
C2 C1 H3 114.860 C2 C1 O5 121.336
H3 C1 O5 123.804 H4 C2 O6 123.804
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability