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All results from a given calculation for C2H2O (Oxirene)

using model chemistry: B2PLYP=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 B2PLYP=FULL/6-31G
 hartrees
Energy at 0K-152.221510
Energy at 298.15K 
HF Energy-152.109027
Nuclear repulsion energy59.118701
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 B2PLYP=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 3460 3460 3.74 95.60 0.18 0.30
2 A1 1774 1774 0.84 39.91 0.22 0.36
3 A1 993 993 1.95 2.22 0.43 0.60
4 A1 811 811 27.30 11.41 0.44 0.61
5 A2 620 620 0.00 1.88 0.75 0.86
6 B1 588 588 112.36 0.77 0.75 0.86
7 B2 3388 3388 42.23 21.30 0.75 0.86
8 B2 936 936 10.09 2.85 0.75 0.86
9 B2 188i 188i 1.45 13.60 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 6190.5 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 6190.5 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 B2PLYP=FULL/6-31G
ABC
1.09843 0.76672 0.45154

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP=FULL/6-31G

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.958
C2 0.000 0.641 -0.497
C3 0.000 -0.641 -0.497
H4 0.000 1.652 -0.847
H5 0.000 -1.652 -0.847

Atom - Atom Distances (Å)
  O1 C2 C3 H4 H5
O11.58981.58982.44642.4464
C21.58981.28121.06982.3187
C31.58981.28122.31871.0698
H42.44641.06982.31873.3032
H52.44642.31871.06983.3032

picture of Oxirene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 C2 C3 66.238 O1 C2 H4 132.843
O1 C3 C2 66.238 O1 C3 H5 132.843
C2 O1 C3 47.524 C2 C3 H5 160.919
C3 C2 H4 160.919
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability