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

using model chemistry: CCD/6-31G(2df,p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at CCD/6-31G(2df,p)
 hartrees
Energy at 0K-153.443870
Energy at 298.15K 
HF Energy-152.884595
Nuclear repulsion energy75.524747
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 CCD/6-31G(2df,p)
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 3168 3001 8.91      
2 A1 1577 1494 2.60      
3 A1 1337 1267 12.58      
4 A1 1197 1134 0.14      
5 A1 938 889 55.71      
6 A2 3248 3077 0.00      
7 A2 1198 1135 0.00      
8 A2 1076 1019 0.00      
9 B1 3263 3091 34.04      
10 B1 1202 1139 4.35      
11 B1 832 788 0.00      
12 B2 3159 2992 25.61      
13 B2 1534 1453 0.19      
14 B2 1189 1126 0.60      
15 B2 910 862 8.39      

Unscaled Zero Point Vibrational Energy (zpe) 12914.6 cm-1
Scaled (by 0.9472) Zero Point Vibrational Energy (zpe) 12232.7 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 CCD/6-31G(2df,p)
ABC
0.86761 0.74071 0.47643

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCD/6-31G(2df,p)

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.848
C2 0.000 0.733 -0.369
C3 0.000 -0.733 -0.369
H4 0.919 1.267 -0.589
H5 -0.919 1.267 -0.589
H6 -0.919 -1.267 -0.589
H7 0.919 -1.267 -0.589

Atom - Atom Distances (Å)
  O1 C2 C3 H4 H5 H6 H7
O11.41991.41992.12432.12432.12432.1243
C21.41991.46551.08531.08532.21152.2115
C31.41991.46552.21152.21151.08531.0853
H42.12431.08532.21151.83753.12972.5335
H52.12431.08532.21151.83752.53353.1297
H62.12432.21151.08533.12972.53351.8375
H72.12432.21151.08532.53353.12971.8375

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 58.931 O1 C2 H4 115.328
O1 C2 H5 115.328 O1 C3 C2 58.931
O1 C3 H6 115.328 O1 C3 H7 115.328
C2 O1 C3 62.137 C2 C3 H6 119.474
C2 C3 H7 119.474 C3 C2 H4 119.474
C3 C2 H5 119.474 H4 C2 H5 115.683
H6 C3 H7 115.683
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability