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All results from a given calculation for C2H2O (Oxirene)

using model chemistry: B2PLYP=FULLultrafine/daug-cc-pVTZ

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/daug-cc-pVTZ
 hartrees
Energy at 0K-152.436855
Energy at 298.15K 
HF Energy-152.235201
Nuclear repulsion energy61.421782
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/daug-cc-pVTZ
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 3412 3412 3.27 96.22 0.17 0.28
2 A1 1805 1805 4.14 85.75 0.08 0.14
3 A1 1061 1061 8.44 4.81 0.55 0.71
4 A1 881 881 63.72 6.35 0.74 0.85
5 A2 664 664 0.00 4.52 0.75 0.86
6 B1 550 550 83.44 0.03 0.75 0.86
7 B2 3340 3340 54.86 18.46 0.75 0.86
8 B2 971 971 7.68 2.32 0.75 0.86
9 B2 137i 137i 2.48 16.02 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 6274.5 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 6274.5 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=FULLultrafine/daug-cc-pVTZ
ABC
1.12177 0.87677 0.49213

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP=FULLultrafine/daug-cc-pVTZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.896
C2 0.000 0.632 -0.464
C3 0.000 -0.632 -0.464
H4 0.000 1.645 -0.797
H5 0.000 -1.645 -0.797

Atom - Atom Distances (Å)
  O1 C2 C3 H4 H5
O11.49951.49952.36052.3605
C21.49951.26311.06682.3009
C31.49951.26312.30091.0668
H42.36051.06682.30093.2902
H52.36052.30091.06683.2902

picture of Oxirene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 C2 C3 65.090 O1 C2 H4 133.092
O1 C3 C2 65.090 O1 C3 H5 133.092
C2 O1 C3 49.820 C2 C3 H5 161.818
C3 C2 H4 161.818
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability