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

using model chemistry: MP4=FULL/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=FULL/Def2TZVPP
 hartrees
Energy at 0K-153.611136
Energy at 298.15K 
HF Energy-152.931470
Nuclear repulsion energy75.134638
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/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 3125 3125        
2 A1 1551 1551        
3 A1 1298 1298        
4 A1 1152 1152        
5 A1 889 889        
6 A2 3204 3204        
7 A2 1180 1180        
8 A2 1052 1052        
9 B1 3221 3221        
10 B1 1174 1174        
11 B1 822 822        
12 B2 3116 3116        
13 B2 1518 1518        
14 B2 1165 1165        
15 B2 837 837        

Unscaled Zero Point Vibrational Energy (zpe) 12652.7 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 12652.7 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/Def2TZVPP
ABC
0.84696 0.74234 0.47077

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.860
C2 0.000 0.733 -0.376
C3 0.000 -0.733 -0.376
H4 0.919 1.262 -0.591
H5 -0.919 1.262 -0.591
H6 -0.919 -1.262 -0.591
H7 0.919 -1.262 -0.591

Atom - Atom Distances (Å)
  O1 C2 C3 H4 H5 H6 H7
O11.43671.43672.13132.13132.13132.1313
C21.43671.46551.08181.08182.20662.2066
C31.43671.46552.20662.20661.08181.0818
H42.13131.08182.20661.83733.12182.5239
H52.13131.08182.20661.83732.52393.1218
H62.13132.20661.08183.12182.52391.8373
H72.13132.20661.08182.52393.12181.8373

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 59.334 O1 C2 H4 114.882
O1 C2 H5 114.882 O1 C3 C2 59.334
O1 C3 H6 114.882 O1 C3 H7 114.882
C2 O1 C3 61.333 C2 C3 H6 119.285
C2 C3 H7 119.285 C3 C2 H4 119.285
C3 C2 H5 119.285 H4 C2 H5 116.242
H6 C3 H7 116.242
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability