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All results from a given calculation for C2H4O (Ethylene oxide)

using model chemistry: B2PLYP=FULLultrafine/3-21G*

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/3-21G*
 hartrees
Energy at 0K-152.716612
Energy at 298.15K 
HF Energy-152.610986
Nuclear repulsion energy72.949595
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/3-21G*
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 3167 3167 3.40 164.75 0.10 0.18
2 A1 1589 1589 0.04 7.46 0.73 0.84
3 A1 1225 1225 6.22 14.70 0.11 0.20
4 A1 1136 1136 6.82 8.98 0.31 0.48
5 A1 816 816 22.74 10.65 0.73 0.84
6 A2 3244 3244 0.00 93.53 0.75 0.86
7 A2 1213 1213 0.00 6.30 0.75 0.86
8 A2 1001 1001 0.00 0.00 0.75 0.86
9 B1 3263 3263 39.87 12.81 0.75 0.86
10 B1 1116 1116 0.75 19.03 0.75 0.86
11 B1 851 851 0.05 11.52 0.75 0.86
12 B2 3157 3157 21.25 7.36 0.75 0.86
13 B2 1572 1572 0.07 5.96 0.75 0.86
14 B2 1138 1138 15.05 3.09 0.75 0.86
15 B2 768 768 4.32 7.90 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 12627.6 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 12627.6 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/3-21G*
ABC
0.76618 0.72682 0.43911

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP=FULLultrafine/3-21G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.913
C2 0.000 0.744 -0.399
C3 0.000 -0.744 -0.399
H4 0.919 1.270 -0.628
H5 -0.919 1.270 -0.628
H6 -0.919 -1.270 -0.628
H7 0.919 -1.270 -0.628

Atom - Atom Distances (Å)
  O1 C2 C3 H4 H5 H6 H7
O11.50821.50822.19822.19822.19822.1982
C21.50821.48821.08321.08322.22562.2256
C31.50821.48822.22562.22561.08321.0832
H42.19821.08322.22561.83753.13502.5401
H52.19821.08322.22561.83752.54013.1350
H62.19822.22561.08323.13502.54011.8375
H72.19822.22561.08322.54013.13501.8375

picture of Ethylene oxide state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 C2 C3 60.437 O1 C2 H4 115.069
O1 C2 H5 115.069 O1 C3 C2 60.437
O1 C3 H6 115.069 O1 C3 H7 115.069
C2 O1 C3 59.125 C2 C3 H6 119.050
C2 C3 H7 119.050 C3 C2 H4 119.050
C3 C2 H5 119.050 H4 C2 H5 116.028
H6 C3 H7 116.028
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability