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

using model chemistry: MP2/aug-cc-pVQZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at MP2/aug-cc-pVQZ
 hartrees
Energy at 0K-153.557933
Energy at 298.15K 
HF Energy-152.937927
Nuclear repulsion energy75.369432
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 MP2/aug-cc-pVQZ
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 3158 2999 13.85 229.02 0.06 0.11
2 A1 1548 1470 1.75 2.83 0.26 0.41
3 A1 1310 1244 12.10 31.08 0.10 0.17
4 A1 1151 1093 0.39 4.64 0.12 0.21
5 A1 904 859 69.08 7.52 0.75 0.86
6 A2 3250 3087 0.00 93.25 0.75 0.86
7 A2 1184 1124 0.00 0.81 0.75 0.86
8 A2 1058 1005 0.00 0.01 0.75 0.86
9 B1 3264 3099 22.42 18.36 0.75 0.86
10 B1 1174 1115 3.69 2.87 0.75 0.86
11 B1 825 784 0.33 2.17 0.75 0.86
12 B2 3152 2993 22.99 8.90 0.75 0.86
13 B2 1515 1439 0.24 2.99 0.75 0.86
14 B2 1169 1110 0.34 0.14 0.75 0.86
15 B2 854 811 8.31 3.47 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 12757.5 cm-1
Scaled (by 0.9497) Zero Point Vibrational Energy (zpe) 12115.8 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 MP2/aug-cc-pVQZ
ABC
0.85218 0.74712 0.47428

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/aug-cc-pVQZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.857
C2 0.000 0.730 -0.375
C3 0.000 -0.730 -0.375
H4 0.918 1.258 -0.588
H5 -0.918 1.258 -0.588
H6 -0.918 -1.258 -0.588
H7 0.918 -1.258 -0.588

Atom - Atom Distances (Å)
  O1 C2 C3 H4 H5 H6 H7
O11.43161.43162.12442.12442.12442.1244
C21.43161.45951.08081.08082.20022.2002
C31.43161.45952.20022.20021.08081.0808
H42.12441.08082.20021.83693.11562.5165
H52.12441.08082.20021.83692.51653.1156
H62.12442.20021.08083.11562.51651.8369
H72.12442.20021.08082.51653.11561.8369

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 59.353 O1 C2 H4 114.747
O1 C2 H5 114.747 O1 C3 C2 59.353
O1 C3 H6 114.747 O1 C3 H7 114.747
C2 O1 C3 61.294 C2 C3 H6 119.275
C2 C3 H7 119.275 C3 C2 H4 119.275
C3 C2 H5 119.275 H4 C2 H5 116.377
H6 C3 H7 116.377
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability