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

using model chemistry: MP2=FULL/cc-pCVTZ

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-pCVTZ
 hartrees
Energy at 0K-153.654637
Energy at 298.15K-153.659335
Nuclear repulsion energy75.468396
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-pCVTZ
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 3163 3008 11.82      
2 A1 1559 1483 1.61      
3 A1 1317 1253 11.26      
4 A1 1158 1102 0.39      
5 A1 912 867 60.30      
6 A2 3253 3094 0.00      
7 A2 1187 1129 0.00      
8 A2 1061 1009 0.00      
9 B1 3267 3107 29.95      
10 B1 1182 1125 3.31      
11 B1 828 788 0.03      
12 B2 3156 3001 27.08      
13 B2 1524 1450 0.00      
14 B2 1162 1106 1.69      
15 B2 863 821 8.69      

Unscaled Zero Point Vibrational Energy (zpe) 12796.4 cm-1
Scaled (by 0.9511) Zero Point Vibrational Energy (zpe) 12170.6 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-pCVTZ
ABC
0.85542 0.74825 0.47547

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.855
C2 0.000 0.729 -0.373
C3 0.000 -0.729 -0.373
H4 0.917 1.257 -0.591
H5 -0.917 1.257 -0.591
H6 -0.917 -1.257 -0.591
H7 0.917 -1.257 -0.591

Atom - Atom Distances (Å)
  O1 C2 C3 H4 H5 H6 H7
O11.42831.42832.12432.12432.12432.1243
C21.42831.45881.08031.08032.19882.1988
C31.42831.45882.19882.19881.08031.0803
H42.12431.08032.19881.83433.11202.5140
H52.12431.08032.19881.83432.51403.1120
H62.12432.19881.08033.11202.51401.8343
H72.12432.19881.08032.51403.11201.8343

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 59.290 O1 C2 H4 115.029
O1 C2 H5 115.029 O1 C3 C2 59.290
O1 C3 H6 115.029 O1 C3 H7 115.029
C2 O1 C3 61.420 C2 C3 H6 119.232
C2 C3 H7 119.232 C3 C2 H4 119.232
C3 C2 H5 119.232 H4 C2 H5 116.194
H6 C3 H7 116.194
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability