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All results from a given calculation for C2H2O (Oxirene)

using model chemistry: B2PLYP=FULL/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 B2PLYP=FULL/6-311G**
 hartrees
Energy at 0K-152.384964
Energy at 298.15K 
HF Energy-152.209933
Nuclear repulsion energy61.239036
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/6-311G**
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 3427 3427 2.16 88.15 0.21 0.35
2 A1 1803 1803 1.34 51.77 0.18 0.31
3 A1 1068 1068 2.66 5.14 0.46 0.63
4 A1 884 884 52.83 8.50 0.57 0.73
5 A2 616 616 0.00 3.03 0.75 0.86
6 B1 536 536 88.78 0.54 0.75 0.86
7 B2 3355 3355 48.62 17.30 0.75 0.86
8 B2 958 958 6.20 2.61 0.75 0.86
9 B2 252i 252i 5.45 14.17 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 6196.8 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 6196.8 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/6-311G**
ABC
1.11452 0.87195 0.48921

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP=FULL/6-311G**

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.898
C2 0.000 0.633 -0.466
C3 0.000 -0.633 -0.466
H4 0.000 1.651 -0.795
H5 0.000 -1.651 -0.795

Atom - Atom Distances (Å)
  O1 C2 C3 H4 H5
O11.50431.50432.36452.3645
C21.50431.26701.06912.3079
C31.50431.26702.30791.0691
H42.36451.06912.30793.3019
H52.36452.30791.06913.3019

picture of Oxirene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 C2 C3 65.094 O1 C2 H4 132.786
O1 C3 C2 65.094 O1 C3 H5 132.786
C2 O1 C3 49.811 C2 C3 H5 162.119
C3 C2 H4 162.119
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability