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

using model chemistry: MP2=FULL/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=FULL/cc-pVQZ
 hartrees
Energy at 0K-153.638373
Energy at 298.15K 
HF Energy-152.937593
Nuclear repulsion energy75.613950
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-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 3171 3035 12.58 221.32 0.07 0.13
2 A1 1558 1491 1.58 1.95 0.42 0.59
3 A1 1320 1263 11.54 28.30 0.12 0.21
4 A1 1156 1106 0.35 2.23 0.23 0.38
5 A1 913 874 64.74 8.35 0.75 0.86
6 A2 3262 3122 0.00 96.07 0.75 0.86
7 A2 1187 1136 0.00 1.14 0.75 0.86
8 A2 1063 1017 0.00 0.01 0.75 0.86
9 B1 3276 3135 24.65 16.75 0.75 0.86
10 B1 1183 1132 3.44 5.02 0.75 0.86
11 B1 830 794 0.13 3.36 0.75 0.86
12 B2 3164 3029 24.60 8.91 0.75 0.86
13 B2 1523 1457 0.13 3.69 0.75 0.86
14 B2 1166 1116 1.03 0.63 0.75 0.86
15 B2 861 824 8.87 3.47 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 12815.4 cm-1
Scaled (by 0.9571) Zero Point Vibrational Energy (zpe) 12265.7 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-pVQZ
ABC
0.85786 0.75184 0.47742

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.854
C2 0.000 0.727 -0.373
C3 0.000 -0.727 -0.373
H4 0.916 1.254 -0.588
H5 -0.916 1.254 -0.588
H6 -0.916 -1.254 -0.588
H7 0.916 -1.254 -0.588

Atom - Atom Distances (Å)
  O1 C2 C3 H4 H5 H6 H7
O11.42631.42632.11902.11902.11902.1190
C21.42631.45501.07811.07812.19342.1934
C31.42631.45502.19342.19341.07811.0781
H42.11901.07812.19341.83183.10562.5078
H52.11901.07812.19341.83182.50783.1056
H62.11902.19341.07813.10562.50781.8318
H72.11902.19341.07812.50783.10561.8318

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 59.332 O1 C2 H4 114.879
O1 C2 H5 114.879 O1 C3 C2 59.332
O1 C3 H6 114.879 O1 C3 H7 114.879
C2 O1 C3 61.337 C2 C3 H6 119.229
C2 C3 H7 119.229 C3 C2 H4 119.229
C3 C2 H5 119.229 H4 C2 H5 116.327
H6 C3 H7 116.327
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability