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All results from a given calculation for C2H2O (Oxirene)

using model chemistry: B2PLYP=FULL/aug-cc-pVDZ

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/aug-cc-pVDZ
 hartrees
Energy at 0K-152.355566
Energy at 298.15K 
HF Energy-152.194240
Nuclear repulsion energy60.788447
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/aug-cc-pVDZ
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 3422 3292 3.13 96.64 0.17 0.30
2 A1 1797 1728 4.07 83.47 0.09 0.17
3 A1 1042 1003 7.83 6.21 0.48 0.65
4 A1 866 833 62.34 7.70 0.70 0.83
5 A2 576 554 0.00 4.76 0.75 0.86
6 B1 511 491 86.40 0.06 0.75 0.86
7 B2 3351 3223 56.34 17.75 0.75 0.86
8 B2 945 909 8.25 2.32 0.75 0.86
9 B2 197i 190i 2.33 16.46 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 6156.8 cm-1
Scaled (by 0.9618) Zero Point Vibrational Energy (zpe) 5921.6 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=FULL/aug-cc-pVDZ
ABC
1.09681 0.86026 0.48212

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP=FULL/aug-cc-pVDZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.904
C2 0.000 0.639 -0.469
C3 0.000 -0.639 -0.469
H4 0.000 1.663 -0.805
H5 0.000 -1.663 -0.805

Atom - Atom Distances (Å)
  O1 C2 C3 H4 H5
O11.51441.51442.38432.3843
C21.51441.27791.07742.3259
C31.51441.27792.32591.0774
H42.38431.07742.32593.3252
H52.38432.32591.07743.3252

picture of Oxirene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 C2 C3 65.044 O1 C2 H4 133.128
O1 C3 C2 65.044 O1 C3 H5 133.128
C2 O1 C3 49.913 C2 C3 H5 161.829
C3 C2 H4 161.829
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability