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

using model chemistry: B2PLYP=FULLultrafine/6-311G*

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/6-311G*
 hartrees
Energy at 0K-153.679865
Energy at 298.15K 
HF Energy-153.508964
Nuclear repulsion energy75.252000
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/6-311G*
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 3126 3126 13.06 209.49 0.10 0.18
2 A1 1569 1569 2.47 2.04 0.73 0.84
3 A1 1314 1314 12.61 24.79 0.15 0.26
4 A1 1162 1162 0.02 1.75 0.46 0.63
5 A1 899 899 68.12 10.95 0.75 0.86
6 A2 3206 3206 0.00 115.83 0.75 0.86
7 A2 1197 1197 0.00 3.16 0.75 0.86
8 A2 1059 1059 0.00 0.09 0.75 0.86
9 B1 3221 3221 64.78 16.96 0.75 0.86
10 B1 1186 1186 3.87 11.74 0.75 0.86
11 B1 831 831 0.00 6.78 0.75 0.86
12 B2 3118 3118 45.62 10.35 0.75 0.86
13 B2 1533 1533 0.10 6.16 0.75 0.86
14 B2 1151 1151 3.28 2.45 0.75 0.86
15 B2 847 847 10.93 4.18 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 12708.3 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 12708.3 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/6-311G*
ABC
0.85570 0.74012 0.47264

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP=FULLultrafine/6-311G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.854
C2 0.000 0.733 -0.373
C3 0.000 -0.733 -0.373
H4 0.919 1.269 -0.589
H5 -0.919 1.269 -0.589
H6 -0.919 -1.269 -0.589
H7 0.919 -1.269 -0.589

Atom - Atom Distances (Å)
  O1 C2 C3 H4 H5 H6 H7
O11.42961.42962.13042.13042.13042.1304
C21.42961.46531.08571.08572.21292.2129
C31.42961.46532.21292.21291.08571.0857
H42.13041.08572.21291.83813.13332.5375
H52.13041.08572.21291.83812.53753.1333
H62.13042.21291.08573.13332.53751.8381
H72.13042.21291.08572.53753.13331.8381

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 59.171 O1 C2 H4 115.082
O1 C2 H5 115.082 O1 C3 C2 59.171
O1 C3 H6 115.082 O1 C3 H7 115.082
C2 O1 C3 61.658 C2 C3 H6 119.589
C2 C3 H7 119.589 C3 C2 H4 119.589
C3 C2 H5 119.589 H4 C2 H5 115.669
H6 C3 H7 115.669
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability