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All results from a given calculation for C2H2O (Oxirene)

using model chemistry: B2PLYP=FULLultrafine/6-31+G**

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=FULLultrafine/6-31+G**
 hartrees
Energy at 0K-152.338738
Energy at 298.15K 
HF Energy-152.181790
Nuclear repulsion energy61.073281
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=FULLultrafine/6-31+G**
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 3.08 91.89 0.21 0.35
2 A1 1814 1814 3.25 74.62 0.10 0.19
3 A1 1065 1065 7.27 7.05 0.65 0.79
4 A1 879 879 61.65 9.29 0.71 0.83
5 A2 590 590 0.00 6.65 0.75 0.86
6 B1 530 530 99.47 0.02 0.75 0.86
7 B2 3376 3376 55.20 17.88 0.75 0.86
8 B2 957 957 7.15 2.02 0.75 0.86
9 B2 207i 207i 3.24 20.05 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 6224.6 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 6224.6 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=FULLultrafine/6-31+G**
ABC
1.10660 0.86862 0.48664

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.900
C2 0.000 0.636 -0.467
C3 0.000 -0.636 -0.467
H4 0.000 1.655 -0.796
H5 0.000 -1.655 -0.796

Atom - Atom Distances (Å)
  O1 C2 C3 H4 H5
O11.50781.50782.36932.3693
C21.50781.27231.07052.3146
C31.50781.27232.31461.0705
H42.36931.07052.31463.3101
H52.36932.31461.07053.3101

picture of Oxirene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 C2 C3 65.046 O1 C2 H4 132.813
O1 C3 C2 65.046 O1 C3 H5 132.813
C2 O1 C3 49.908 C2 C3 H5 162.141
C3 C2 H4 162.141
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability