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

using model chemistry: MP2=FULL/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 MP2=FULL/cc-pVTZ
 hartrees
Energy at 0K-153.545743
Energy at 298.15K 
HF Energy-152.926233
Nuclear repulsion energy75.579247
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=FULL/cc-pVTZ
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A1 3177 3016 11.88 214.79 0.08 0.15
2 A1 1567 1487 1.71 1.60 0.61 0.76
3 A1 1325 1258 11.39 26.45 0.13 0.23
4 A1 1164 1105 0.25 1.67 0.30 0.46
5 A1 917 871 60.68 9.05 0.75 0.86
6 A2 3249 3084 0.00 97.82 0.75 0.86
7 A2 1188 1128 0.00 1.68 0.75 0.86
8 A2 1067 1013 0.00 0.01 0.75 0.86
9 B1 3264 3099 30.20 15.99 0.75 0.86
10 B1 1191 1130 3.38 7.14 0.75 0.86
11 B1 831 789 0.02 4.25 0.75 0.86
12 B2 3168 3007 27.57 8.84 0.75 0.86
13 B2 1532 1455 0.00 4.47 0.75 0.86
14 B2 1168 1109 1.72 0.97 0.75 0.86
15 B2 865 821 8.70 3.74 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 12836.0 cm-1
Scaled (by 0.9494) Zero Point Vibrational Energy (zpe) 12186.5 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 MP2=FULL/cc-pVTZ
ABC
0.85768 0.75055 0.47675

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/cc-pVTZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.854
C2 0.000 0.729 -0.372
C3 0.000 -0.729 -0.372
H4 0.915 1.254 -0.591
H5 -0.915 1.254 -0.591
H6 -0.915 -1.254 -0.591
H7 0.915 -1.254 -0.591

Atom - Atom Distances (Å)
  O1 C2 C3 H4 H5 H6 H7
O11.42651.42652.12102.12102.12102.1210
C21.42651.45751.07771.07772.19462.1946
C31.42651.45752.19462.19461.07771.0777
H42.12101.07772.19461.83083.10472.5074
H52.12101.07772.19461.83082.50743.1047
H62.12102.19461.07773.10472.50741.8308
H72.12102.19461.07772.50743.10471.8308

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 59.278 O1 C2 H4 115.056
O1 C2 H5 115.056 O1 C3 C2 59.278
O1 C3 H6 115.056 O1 C3 H7 115.056
C2 O1 C3 61.444 C2 C3 H6 119.150
C2 C3 H7 119.150 C3 C2 H4 119.150
C3 C2 H5 119.150 H4 C2 H5 116.290
H6 C3 H7 116.290
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability