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

using model chemistry: CCD/TZVP

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/TZVP
 hartrees
Energy at 0K-153.430993
Energy at 298.15K 
HF Energy-152.920715
Nuclear repulsion energy75.463791
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/TZVP
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 2995 10.68      
2 A1 1584 1502 3.37      
3 A1 1330 1261 11.28      
4 A1 1211 1148 0.84      
5 A1 919 871 68.06      
6 A2 3240 3072 0.00      
7 A2 1209 1146 0.00      
8 A2 1081 1025 0.00      
9 B1 3255 3085 44.14      
10 B1 1208 1145 5.82      
11 B1 841 798 0.00      
12 B2 3151 2987 31.02      
13 B2 1547 1466 0.15      
14 B2 1192 1130 2.50      
15 B2 891 845 8.18      

Unscaled Zero Point Vibrational Energy (zpe) 12908.8 cm-1
Scaled (by 0.948) Zero Point Vibrational Energy (zpe) 12237.5 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/TZVP
ABC
0.86369 0.74146 0.47551

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCD/TZVP

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.850
C2 0.000 0.733 -0.370
C3 0.000 -0.733 -0.370
H4 0.919 1.265 -0.589
H5 -0.919 1.265 -0.589
H6 -0.919 -1.265 -0.589
H7 0.919 -1.265 -0.589

Atom - Atom Distances (Å)
  O1 C2 C3 H4 H5 H6 H7
O11.42331.42332.12432.12432.12432.1243
C21.42331.46541.08381.08382.20952.2095
C31.42331.46542.20952.20951.08381.0838
H42.12431.08382.20951.83703.12652.5299
H52.12431.08382.20951.83702.52993.1265
H62.12432.20951.08383.12652.52991.8370
H72.12432.20951.08382.52993.12651.8370

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 59.016 O1 C2 H4 115.177
O1 C2 H5 115.177 O1 C3 C2 59.016
O1 C3 H6 115.177 O1 C3 H7 115.177
C2 O1 C3 61.967 C2 C3 H6 119.412
C2 C3 H7 119.412 C3 C2 H4 119.412
C3 C2 H5 119.412 H4 C2 H5 115.886
H6 C3 H7 115.886
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability