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

using model chemistry: CCSD(T)=FULL/cc-pVDZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at CCSD(T)=FULL/cc-pVDZ
 hartrees
Energy at 0K-153.388510
Energy at 298.15K 
HF Energy-152.875672
Nuclear repulsion energy74.715542
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 CCSD(T)=FULL/cc-pVDZ
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 3120 3005        
2 A1 1546 1489        
3 A1 1301 1253        
4 A1 1155 1113        
5 A1 898 865        
6 A2 3200 3082        
7 A2 1167 1124        
8 A2 1039 1000        
9 B1 3216 3097        
10 B1 1165 1122        
11 B1 813 783        
12 B2 3109 2995        
13 B2 1498 1443        
14 B2 1140 1098        
15 B2 849 818        

Unscaled Zero Point Vibrational Energy (zpe) 12606.8 cm-1
Scaled (by 0.9632) Zero Point Vibrational Energy (zpe) 12142.8 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 CCSD(T)=FULL/cc-pVDZ
ABC
0.84765 0.72608 0.46655

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCSD(T)=FULL/cc-pVDZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.858
C2 0.000 0.740 -0.372
C3 0.000 -0.740 -0.372
H4 0.930 1.279 -0.599
H5 -0.930 1.279 -0.599
H6 -0.930 -1.279 -0.599
H7 0.930 -1.279 -0.599

Atom - Atom Distances (Å)
  O1 C2 C3 H4 H5 H6 H7
O11.43481.43482.15042.15042.15042.1504
C21.43481.47941.09901.09902.23462.2346
C31.43481.47942.23462.23461.09901.0990
H42.15041.09902.23461.85993.16342.5589
H52.15041.09902.23461.85992.55893.1634
H62.15042.23461.09903.16342.55891.8599
H72.15042.23461.09902.55893.16341.8599

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 58.967 O1 C2 H4 115.496
O1 C2 H5 115.496 O1 C3 C2 58.967
O1 C3 H6 115.496 O1 C3 H7 115.496
C2 O1 C3 62.067 C2 C3 H6 119.416
C2 C3 H7 119.416 C3 C2 H4 119.416
C3 C2 H5 119.416 H4 C2 H5 115.594
H6 C3 H7 115.594
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability