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All results from a given calculation for C2H2O2 (Ethanedial)

using model chemistry: AM1

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
Energy calculated at AM1
 hartrees
Energy at 0K 
Energy at 298.15K-0.093660
Nuclear repulsion energy53.855943
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 AM1
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A 3087 2943 0.63      
2 A 2071 1975 47.13      
3 A 1338 1276 2.26      
4 A 1151 1098 11.36      
5 A 892 850 4.55      
6 A 470 449 0.10      
7 A 39 37 26.45      
8 B 3099 2955 2.14      
9 B 2061 1965 252.18      
10 B 1305 1245 42.17      
11 B 1042 994 21.06      
12 B 438 418 31.30      

Unscaled Zero Point Vibrational Energy (zpe) 8496.5 cm-1
Scaled (by 0.9535) Zero Point Vibrational Energy (zpe) 8101.4 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 AM1
ABC
1.40139 0.16045 0.15667

See section I.F.4 to change rotational constant units
Geometric Data calculated at AM1

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.751 0.231
C2 0.000 -0.751 0.231
H3 0.872 1.224 0.734
H4 -0.872 -1.224 0.734
O5 -0.908 1.404 -0.276
O6 0.908 -1.404 -0.276

Atom - Atom Distances (Å)
  C1 C2 H3 H4 O5 O6
C11.50271.11252.21721.22832.3937
C21.50272.21721.11252.39371.2283
H31.11252.21723.00572.05522.8163
H42.21721.11253.00572.81632.0552
O51.22832.39372.05522.81633.3453
O62.39371.22832.81632.05523.3453

picture of Ethanedial state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H4 115.140 C1 C2 O6 122.125
C2 C1 H3 115.140 C2 C1 O5 122.125
H3 C1 O5 122.729 H4 C2 O6 122.729
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability