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All results from a given calculation for C2H2O2 (Ethanedial)

using model chemistry: CID/cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2H 1Ag
Energy calculated at CID/cc-pVTZ
 hartrees
Energy at 0K-227.342994
Energy at 298.15K 
HF Energy-226.678588
Nuclear repulsion energy103.047339
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 CID/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 3119 2890 0.00      
2 Ag 1944 1801 0.00      
3 Ag 1451 1344 0.00      
4 Ag 1154 1069 0.00      
5 Ag 592 548 0.00      
6 Au 876 811 0.72      
7 Au 142 131 37.03      
8 Bg 1151 1067 0.00      
9 Bu 3116 2887 96.94      
10 Bu 1915 1775 215.00      
11 Bu 1407 1304 11.58      
12 Bu 353 327 58.26      

Unscaled Zero Point Vibrational Energy (zpe) 8610.1 cm-1
Scaled (by 0.9265) Zero Point Vibrational Energy (zpe) 7977.2 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 CID/cc-pVTZ
ABC
1.90097 0.16317 0.15027

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

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.325 0.682 0.000
C2 0.325 -0.682 0.000
H3 -1.418 0.674 0.000
H4 1.418 -0.674 0.000
O5 0.325 1.678 0.000
O6 -0.325 -1.678 0.000

Atom - Atom Distances (Å)
  C1 C2 H3 H4 O5 O6
C11.51221.09292.20931.18972.3607
C21.51222.20931.09292.36071.1897
H31.09292.20933.14062.01232.5938
H42.20931.09293.14062.59382.0123
O51.18972.36072.01232.59383.4191
O62.36071.18972.59382.01233.4191

picture of Ethanedial state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H4 115.055 C1 C2 O6 121.329
C2 C1 H3 115.055 C2 C1 O5 121.329
H3 C1 O5 123.616 H4 C2 O6 123.616
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability