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

using model chemistry: QCISD(T)=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 QCISD(T)=FULL/Def2TZVPP
 hartrees
Energy at 0K-153.608455
Energy at 298.15K 
HF Energy-152.931870
Nuclear repulsion energy75.268388
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 QCISD(T)=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 3124 3124        
2 A1 1556 1556        
3 A1 1303 1303        
4 A1 1163 1163        
5 A1 900 900        
6 A2 3200 3200        
7 A2 1182 1182        
8 A2 1057 1057        
9 B1 3217 3217        
10 B1 1182 1182        
11 B1 824 824        
12 B2 3114 3114        
13 B2 1521 1521        
14 B2 1171 1171        
15 B2 854 854        

Unscaled Zero Point Vibrational Energy (zpe) 12683.2 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 12683.2 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 QCISD(T)=FULL/Def2TZVPP
ABC
0.85409 0.74165 0.47262

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD(T)=FULL/Def2TZVPP

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.856
C2 0.000 0.733 -0.374
C3 0.000 -0.733 -0.374
H4 0.918 1.262 -0.591
H5 -0.918 1.262 -0.591
H6 -0.918 -1.262 -0.591
H7 0.918 -1.262 -0.591

Atom - Atom Distances (Å)
  O1 C2 C3 H4 H5 H6 H7
O11.43121.43122.12802.12802.12802.1280
C21.43121.46661.08181.08182.20752.2075
C31.43121.46662.20752.20751.08181.0818
H42.12801.08182.20751.83663.12212.5248
H52.12801.08182.20751.83662.52483.1221
H62.12802.20751.08183.12212.52481.8366
H72.12802.20751.08182.52483.12211.8366

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 59.178 O1 C2 H4 115.016
O1 C2 H5 115.016 O1 C3 C2 59.178
O1 C3 H6 115.016 O1 C3 H7 115.016
C2 O1 C3 61.643 C2 C3 H6 119.279
C2 C3 H7 119.279 C3 C2 H4 119.279
C3 C2 H5 119.279 H4 C2 H5 116.176
H6 C3 H7 116.176
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability