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All results from a given calculation for C2H2O (Oxirene)

using model chemistry: PM6

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
Energy calculated at PM6
 hartrees
Energy at 0K 
Energy at 298.15K0.083238
HF Energy0.083238
Nuclear repulsion energy47.399736
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 PM6
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A1 2829 3006 21.16      
2 A1 1917 2037 7.82      
3 A1 1126 1196 27.70      
4 A1 951 1011 25.30      
5 A2 692 735 0.00      
6 B1 858 911 103.00      
7 B2 2783 2957 453.47      
8 B2 979 1040 0.76      
9 B2 358 381 44.33      

Unscaled Zero Point Vibrational Energy (zpe) 6246.4 cm-1
Scaled (by 1.0624) Zero Point Vibrational Energy (zpe) 6636.1 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 PM6
ABC
1.07452 0.92158 0.49609

See section I.F.4 to change rotational constant units
Geometric Data calculated at PM6

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.873
C2 0.000 0.650 -0.461
C3 0.000 -0.650 -0.461
H4 0.000 1.660 -0.724
H5 0.000 -1.660 -0.724

Atom - Atom Distances (Å)
  O1 C2 C3 H4 H5
O11.48381.48382.30272.3027
C21.48381.29981.04322.3244
C31.48381.29982.32441.0432
H42.30271.04322.32443.3192
H52.30272.32441.04323.3192

picture of Oxirene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 C2 C3 64.023 O1 C2 H4 130.544
O1 C3 C2 64.023 O1 C3 H5 130.544
C2 O1 C3 51.954 C2 C3 H5 165.433
C3 C2 H4 165.433
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability