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All results from a given calculation for C2H2O (Oxirene)

using model chemistry: CID/6-311G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at CID/6-311G*
 hartrees
Energy at 0K-152.038284
Energy at 298.15K 
HF Energy-151.616516
Nuclear repulsion energy61.919343
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/6-311G*
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 3493 3246 1.55      
2 A1 1881 1747 1.01      
3 A1 1142 1061 11.50      
4 A1 936 870 57.14      
5 A2 611 568 0.00      
6 B1 562 523 98.40      
7 B2 3416 3174 41.98      
8 B2 979 910 4.86      
9 B2 355 330 2.63      

Unscaled Zero Point Vibrational Energy (zpe) 6687.9 cm-1
Scaled (by 0.9291) Zero Point Vibrational Energy (zpe) 6213.7 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/6-311G*
ABC
1.12313 0.90498 0.50116

See section I.F.4 to change rotational constant units
Geometric Data calculated at CID/6-311G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.882
C2 0.000 0.630 -0.458
C3 0.000 -0.630 -0.458
H4 0.000 1.648 -0.781
H5 0.000 -1.648 -0.781

Atom - Atom Distances (Å)
  O1 C2 C3 H4 H5
O11.48011.48012.34082.3408
C21.48011.26061.06782.3012
C31.48011.26062.30121.0678
H42.34081.06782.30123.2961
H52.34082.30121.06783.2961

picture of Oxirene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 C2 C3 64.795 O1 C2 H4 132.819
O1 C3 C2 64.795 O1 C3 H5 132.819
C2 O1 C3 50.410 C2 C3 H5 162.386
C3 C2 H4 162.386
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability