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All results from a given calculation for C2H2O (Oxirene)

using model chemistry: MP3=FULL/daug-cc-pVDZ

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/daug-cc-pVDZ
 hartrees
Energy at 0K-152.095238
Energy at 298.15K 
HF Energy-151.606842
Nuclear repulsion energy60.936662
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/daug-cc-pVDZ
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 3444 3444 3.11      
2 A1 1809 1809 3.99      
3 A1 1089 1089 16.32      
4 A1 892 892 53.21      
5 A2 589 589 0.00      
6 B1 524 524 83.33      
7 B2 3373 3373 47.37      
8 B2 968 968 7.22      
9 B2 359 359 0.12      

Unscaled Zero Point Vibrational Energy (zpe) 6523.5 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 6523.5 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/daug-cc-pVDZ
ABC
1.08858 0.87539 0.48521

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP3=FULL/daug-cc-pVDZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.896
C2 0.000 0.642 -0.464
C3 0.000 -0.642 -0.464
H4 0.000 1.666 -0.800
H5 0.000 -1.666 -0.800

Atom - Atom Distances (Å)
  O1 C2 C3 H4 H5
O11.50451.50452.37782.3778
C21.50451.28381.07802.3325
C31.50451.28382.33251.0780
H42.37781.07802.33253.3326
H52.37782.33251.07803.3326

picture of Oxirene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 C2 C3 64.745 O1 C2 H4 133.392
O1 C3 C2 64.745 O1 C3 H5 133.392
C2 O1 C3 50.510 C2 C3 H5 161.863
C3 C2 H4 161.863
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability