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All results from a given calculation for C2H2O (Oxirene)

using model chemistry: MP3=FULL/aug-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/aug-cc-pVDZ
 hartrees
Energy at 0K-152.092665
Energy at 298.15K 
HF Energy-151.606164
Nuclear repulsion energy60.923544
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/aug-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 3445 3445 3.20      
2 A1 1811 1811 4.04      
3 A1 1091 1091 15.54      
4 A1 892 892 53.64      
5 A2 552 552 0.00      
6 B1 504 504 84.87      
7 B2 3375 3375 46.89      
8 B2 962 962 7.69      
9 B2 358 358 0.13      

Unscaled Zero Point Vibrational Energy (zpe) 6494.9 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 6494.9 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/aug-cc-pVDZ
ABC
1.08855 0.87472 0.48499

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.897
C2 0.000 0.642 -0.464
C3 0.000 -0.642 -0.464
H4 0.000 1.667 -0.802
H5 0.000 -1.667 -0.802

Atom - Atom Distances (Å)
  O1 C2 C3 H4 H5
O11.50481.50482.37982.3798
C21.50481.28371.07912.3332
C31.50481.28372.33321.0791
H42.37981.07912.33323.3335
H52.37982.33321.07913.3335

picture of Oxirene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 C2 C3 64.753 O1 C2 H4 133.479
O1 C3 C2 64.753 O1 C3 H5 133.479
C2 O1 C3 50.495 C2 C3 H5 161.768
C3 C2 H4 161.768
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability