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

using model chemistry: MP2=FULL/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 MP2=FULL/6-311G*
 hartrees
Energy at 0K-153.422993
Energy at 298.15K 
HF Energy-152.898975
Nuclear repulsion energy75.239093
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/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 3159 2992 10.18 196.69 0.10 0.19
2 A1 1577 1494 1.71 1.93 0.70 0.83
3 A1 1327 1257 11.86 23.54 0.14 0.25
4 A1 1174 1112 0.51 1.57 0.41 0.59
5 A1 915 867 63.98 10.57 0.75 0.86
6 A2 3250 3078 0.00 103.38 0.75 0.86
7 A2 1204 1140 0.00 3.11 0.75 0.86
8 A2 1067 1010 0.00 0.10 0.75 0.86
9 B1 3263 3091 46.68 14.87 0.75 0.86
10 B1 1192 1129 3.62 11.15 0.75 0.86
11 B1 839 795 0.04 6.22 0.75 0.86
12 B2 3151 2984 32.11 8.99 0.75 0.86
13 B2 1540 1458 0.00 5.74 0.75 0.86
14 B2 1158 1097 4.08 2.04 0.75 0.86
15 B2 866 820 8.91 3.96 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 12840.4 cm-1
Scaled (by 0.9471) Zero Point Vibrational Energy (zpe) 12161.2 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/6-311G*
ABC
0.85444 0.74040 0.47281

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/6-311G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.855
C2 0.000 0.733 -0.374
C3 0.000 -0.733 -0.374
H4 0.921 1.266 -0.589
H5 -0.921 1.266 -0.589
H6 -0.921 -1.266 -0.589
H7 0.921 -1.266 -0.589

Atom - Atom Distances (Å)
  O1 C2 C3 H4 H5 H6 H7
O11.43021.43022.12952.12952.12952.1295
C21.43021.46561.08591.08592.21122.2112
C31.43021.46562.21122.21121.08591.0859
H42.12951.08592.21121.84273.13122.5316
H52.12951.08592.21121.84272.53163.1312
H62.12952.21121.08593.13122.53161.8427
H72.12952.21121.08592.53163.13121.8427

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 59.180 O1 C2 H4 114.941
O1 C2 H5 114.941 O1 C3 C2 59.180
O1 C3 H6 114.941 O1 C3 H7 114.941
C2 O1 C3 61.641 C2 C3 H6 119.394
C2 C3 H7 119.394 C3 C2 H4 119.394
C3 C2 H5 119.394 H4 C2 H5 116.080
H6 C3 H7 116.080
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability