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All results from a given calculation for C2H2O (Oxirene)

using model chemistry: B2PLYP=FULL/STO-3G

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/STO-3G
 hartrees
Energy at 0K-150.250430
Energy at 298.15K 
HF Energy-150.183539
Nuclear repulsion energy59.755883
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/STO-3G
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 3619 3619 13.93 55.38 0.22 0.36
2 A1 1850 1850 0.01 19.22 0.20 0.33
3 A1 1233 1233 0.26 2.55 0.27 0.43
4 A1 950 950 1.30 7.60 0.68 0.81
5 A2 740 740 0.00 0.07 0.75 0.86
6 B1 592 592 43.47 0.79 0.75 0.86
7 B2 3529 3529 119.08 18.35 0.75 0.86
8 B2 1016 1016 10.39 2.80 0.75 0.86
9 B2 551 551 3.17 9.61 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 7039.5 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 7039.5 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/STO-3G
ABC
1.07979 0.81648 0.46493

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP=FULL/STO-3G

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.929
C2 0.000 0.649 -0.470
C3 0.000 -0.649 -0.470
H4 0.000 1.652 -0.898
H5 0.000 -1.652 -0.898

Atom - Atom Distances (Å)
  O1 C2 C3 H4 H5
O11.54181.54182.46332.4633
C21.54181.29811.09082.3408
C31.54181.29812.34081.0908
H42.46331.09082.34083.3043
H52.46332.34081.09083.3043

picture of Oxirene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 C2 C3 65.105 O1 C2 H4 138.025
O1 C3 C2 65.105 O1 C3 H5 138.025
C2 O1 C3 49.789 C2 C3 H5 156.870
C3 C2 H4 156.870
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability