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All results from a given calculation for C2H2O (Oxirene)

using model chemistry: MP3=FULL/6-31G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at MP3=FULL/6-31G
 hartrees
Energy at 0K-151.830800
Energy at 298.15K 
HF Energy-151.507218
Nuclear repulsion energy59.146914
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 MP3=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 A1 3443 3443 3.61      
2 A1 1778 1778 1.11      
3 A1 1025 1025 0.10      
4 A1 839 839 26.97      
5 A2 533 533 0.00      
6 B1 552 552 113.91      
7 B2 3374 3374 28.98      
8 B2 965 965 12.34      
9 B2 391 391 0.05      

Unscaled Zero Point Vibrational Energy (zpe) 6450.0 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 6450.0 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 MP3=FULL/6-31G
ABC
1.09040 0.77413 0.45272

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP3=FULL/6-31G

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.953
C2 0.000 0.643 -0.493
C3 0.000 -0.643 -0.493
H4 0.000 1.655 -0.853
H5 0.000 -1.655 -0.853

Atom - Atom Distances (Å)
  O1 C2 C3 H4 H5
O11.58331.58332.44992.4499
C21.58331.28701.07372.3266
C31.58331.28702.32661.0737
H42.44991.07372.32663.3104
H52.44992.32661.07373.3104

picture of Oxirene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 C2 C3 66.020 O1 C2 H4 133.543
O1 C3 C2 66.020 O1 C3 H5 133.543
C2 O1 C3 47.960 C2 C3 H5 160.437
C3 C2 H4 160.437
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability