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

using model chemistry: MP2=FULL/STO-3G

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/STO-3G
 hartrees
Energy at 0K-151.082117
Energy at 298.15K 
HF Energy-150.924497
Nuclear repulsion energy73.233485
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/STO-3G
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 3412 3033 0.03 63.66 0.11 0.19
2 A1 1697 1508 0.17 13.91 0.72 0.83
3 A1 1392 1237 0.48 13.00 0.30 0.46
4 A1 1275 1133 2.74 2.86 0.25 0.40
5 A1 998 887 3.89 7.23 0.75 0.85
6 A2 3554 3159 0.00 46.74 0.75 0.86
7 A2 1260 1120 0.00 6.58 0.75 0.86
8 A2 1091 970 0.00 0.02 0.75 0.86
9 B1 3561 3166 4.83 7.24 0.75 0.86
10 B1 1203 1069 8.34 11.12 0.75 0.86
11 B1 882 784 0.18 3.64 0.75 0.86
12 B2 3400 3023 1.39 4.18 0.75 0.86
13 B2 1657 1473 1.54 5.16 0.75 0.86
14 B2 1230 1093 0.11 0.41 0.75 0.86
15 B2 1069 950 0.03 5.62 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 13839.5 cm-1
Scaled (by 0.8889) Zero Point Vibrational Energy (zpe) 12302.0 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/STO-3G
ABC
0.80331 0.70674 0.44523

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/STO-3G

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.886
C2 0.000 0.753 -0.380
C3 0.000 -0.753 -0.380
H4 0.930 1.295 -0.631
H5 -0.930 1.295 -0.631
H6 -0.930 -1.295 -0.631
H7 0.930 -1.295 -0.631

Atom - Atom Distances (Å)
  O1 C2 C3 H4 H5 H6 H7
O11.47351.47352.20082.20082.20082.2008
C21.47351.50581.10531.10532.26312.2631
C31.47351.50582.26312.26311.10531.1053
H42.20081.10532.26311.86023.18882.5899
H52.20081.10532.26311.86022.58993.1888
H62.20082.26311.10533.18882.58991.8602
H72.20082.26311.10532.58993.18881.8602

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 59.272 O1 C2 H4 116.447
O1 C2 H5 116.447 O1 C3 C2 59.272
O1 C3 H6 116.447 O1 C3 H7 116.447
C2 O1 C3 61.456 C2 C3 H6 119.368
C2 C3 H7 119.368 C3 C2 H4 119.368
C3 C2 H5 119.368 H4 C2 H5 114.600
H6 C3 H7 114.600
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability