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

using model chemistry: MP4=FULL/daug-cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at MP4=FULL/daug-cc-pVTZ
 hartrees
Energy at 0K-153.617031
Energy at 298.15K 
HF Energy-152.928320
Nuclear repulsion energy75.181716
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 MP4=FULL/daug-cc-pVTZ
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 3125 3125        
2 A1 1545 1545        
3 A1 1299 1299        
4 A1 1141 1141        
5 A1 887 887        
6 A2 3195 3195        
7 A2 1176 1176        
8 A2 1046 1046        
9 B1 3211 3211        
10 B1 1167 1167        
11 B1 816 816        
12 B2 3116 3116        
13 B2 1509 1509        
14 B2 1157 1157        
15 B2 822 822        

Unscaled Zero Point Vibrational Energy (zpe) 12606.3 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 12606.3 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 MP4=FULL/daug-cc-pVTZ
ABC
0.84650 0.74461 0.47172

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP4=FULL/daug-cc-pVTZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.860
C2 0.000 0.731 -0.377
C3 0.000 -0.731 -0.377
H4 0.920 1.261 -0.588
H5 -0.920 1.261 -0.588
H6 -0.920 -1.261 -0.588
H7 0.920 -1.261 -0.588

Atom - Atom Distances (Å)
  O1 C2 C3 H4 H5 H6 H7
O11.43661.43662.12902.12902.12902.1290
C21.43661.46181.08221.08222.20402.2040
C31.43661.46182.20402.20401.08221.0822
H42.12901.08222.20401.83903.12122.5219
H52.12901.08222.20401.83902.52193.1212
H62.12902.20401.08223.12122.52191.8390
H72.12902.20401.08222.52193.12121.8390

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 59.417 O1 C2 H4 114.667
O1 C2 H5 114.667 O1 C3 C2 59.417
O1 C3 H6 114.667 O1 C3 H7 114.667
C2 O1 C3 61.165 C2 C3 H6 119.327
C2 C3 H7 119.327 C3 C2 H4 119.327
C3 C2 H5 119.327 H4 C2 H5 116.354
H6 C3 H7 116.354
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability