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

using model chemistry: CCD/6-311+G(3df,2p)

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/6-311+G(3df,2p)
 hartrees
Energy at 0K-153.512444
Energy at 298.15K 
HF Energy-152.925221
Nuclear repulsion energy75.637119
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/6-311+G(3df,2p)
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 3145 2966 13.09      
2 A1 1573 1483 2.72      
3 A1 1332 1256 14.88      
4 A1 1190 1122 0.26      
5 A1 929 876 70.46      
6 A2 3227 3043 0.00      
7 A2 1193 1125 0.00      
8 A2 1076 1015 0.00      
9 B1 3241 3056 31.46      
10 B1 1201 1133 5.28      
11 B1 830 783 0.29      
12 B2 3135 2957 28.07      
13 B2 1530 1443 0.13      
14 B2 1192 1125 0.14      
15 B2 902 851 8.06      

Unscaled Zero Point Vibrational Energy (zpe) 12847.2 cm-1
Scaled (by 0.9431) Zero Point Vibrational Energy (zpe) 12116.2 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 CCD/6-311+G(3df,2p)
ABC
0.86946 0.74347 0.47800

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCD/6-311+G(3df,2p)

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.846
C2 0.000 0.731 -0.369
C3 0.000 -0.731 -0.369
H4 0.918 1.264 -0.585
H5 -0.918 1.264 -0.585
H6 -0.918 -1.264 -0.585
H7 0.918 -1.264 -0.585

Atom - Atom Distances (Å)
  O1 C2 C3 H4 H5 H6 H7
O11.41881.41882.11892.11892.11892.1189
C21.41881.46251.08321.08322.20712.2071
C31.41881.46252.20712.20711.08321.0832
H42.11891.08322.20711.83623.12482.5284
H52.11891.08322.20711.83622.52843.1248
H62.11892.20711.08323.12482.52841.8362
H72.11892.20711.08322.52843.12481.8362

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 58.974 O1 C2 H4 115.093
O1 C2 H5 115.093 O1 C3 C2 58.974
O1 C3 H6 115.093 O1 C3 H7 115.093
C2 O1 C3 62.052 C2 C3 H6 119.471
C2 C3 H7 119.471 C3 C2 H4 119.471
C3 C2 H5 119.471 H4 C2 H5 115.895
H6 C3 H7 115.895
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability