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

using model chemistry: MP4/Def2TZVPP

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/Def2TZVPP
 hartrees
Energy at 0K-153.551911
Energy at 298.15K 
HF Energy-152.931144
Nuclear repulsion energy75.015935
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/Def2TZVPP
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 3124 3124        
2 A1 1545 1545        
3 A1 1293 1293        
4 A1 1148 1148        
5 A1 885 885        
6 A2 3205 3205        
7 A2 1176 1176        
8 A2 1047 1047        
9 B1 3222 3222        
10 B1 1168 1168        
11 B1 817 817        
12 B2 3115 3115        
13 B2 1512 1512        
14 B2 1156 1156        
15 B2 830 830        

Unscaled Zero Point Vibrational Energy (zpe) 12619.9 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 12619.9 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/Def2TZVPP
ABC
0.84434 0.74003 0.46935

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP4/Def2TZVPP

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.861
C2 0.000 0.734 -0.377
C3 0.000 -0.734 -0.377
H4 0.920 1.265 -0.592
H5 -0.920 1.265 -0.592
H6 -0.920 -1.265 -0.592
H7 0.920 -1.265 -0.592

Atom - Atom Distances (Å)
  O1 C2 C3 H4 H5 H6 H7
O11.43891.43892.13462.13462.13462.1346
C21.43891.46721.08411.08412.21062.2106
C31.43891.46722.21062.21061.08411.0841
H42.13461.08412.21061.84053.12832.5296
H52.13461.08412.21061.84052.52963.1283
H62.13462.21061.08413.12832.52961.8405
H72.13462.21061.08412.52963.12831.8405

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 59.346 O1 C2 H4 114.852
O1 C2 H5 114.852 O1 C3 C2 59.346
O1 C3 H6 114.852 O1 C3 H7 114.852
C2 O1 C3 61.308 C2 C3 H6 119.339
C2 C3 H7 119.339 C3 C2 H4 119.339
C3 C2 H5 119.339 H4 C2 H5 116.187
H6 C3 H7 116.187
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability