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

using model chemistry: MP3=FULL/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 MP3=FULL/6-311+G(3df,2p)
 hartrees
Energy at 0K-153.581517
Energy at 298.15K 
HF Energy-152.925584
Nuclear repulsion energy75.854455
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 MP3=FULL/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 3171 3171 12.49      
2 A1 1578 1578 2.62      
3 A1 1340 1340 15.72      
4 A1 1194 1194 0.20      
5 A1 938 938 69.86      
6 A2 3254 3254 0.00      
7 A2 1196 1196 0.00      
8 A2 1083 1083 0.00      
9 B1 3268 3268 30.33      
10 B1 1211 1211 5.53      
11 B1 833 833 0.32      
12 B2 3161 3161 26.75      
13 B2 1534 1534 0.22      
14 B2 1194 1194 0.19      
15 B2 914 914 7.55      

Unscaled Zero Point Vibrational Energy (zpe) 12933.6 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 12933.6 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 MP3=FULL/6-311+G(3df,2p)
ABC
0.87644 0.74605 0.48073

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP3=FULL/6-311+G(3df,2p)

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.843
C2 0.000 0.730 -0.367
C3 0.000 -0.730 -0.367
H4 0.916 1.261 -0.584
H5 -0.916 1.261 -0.584
H6 -0.916 -1.261 -0.584
H7 0.916 -1.261 -0.584

Atom - Atom Distances (Å)
  O1 C2 C3 H4 H5 H6 H7
O11.41341.41342.11322.11322.11322.1132
C21.41341.46091.08041.08042.20262.2026
C31.41341.46092.20262.20261.08041.0804
H42.11321.08042.20261.83173.11682.5217
H52.11321.08042.20261.83172.52173.1168
H62.11322.20261.08043.11682.52171.8317
H72.11322.20261.08042.52173.11681.8317

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 58.881 O1 C2 H4 115.206
O1 C2 H5 115.206 O1 C3 C2 58.881
O1 C3 H6 115.206 O1 C3 H7 115.206
C2 O1 C3 62.238 C2 C3 H6 119.400
C2 C3 H7 119.400 C3 C2 H4 119.400
C3 C2 H5 119.400 H4 C2 H5 115.922
H6 C3 H7 115.922
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability