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

using model chemistry: CCSD/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 CCSD/Def2TZVPP
 hartrees
Energy at 0K-153.524675
Energy at 298.15K 
HF Energy-152.932417
Nuclear repulsion energy75.493329
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/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 3146 3146 11.80      
2 A1 1572 1572 2.64      
3 A1 1323 1323 12.76      
4 A1 1184 1184 0.27      
5 A1 919 919 66.52      
6 A2 3223 3223        
7 A2 1192 1192        
8 A2 1070 1070        
9 B1 3239 3239 37.07      
10 B1 1196 1196 4.50      
11 B1 830 830 0.05      
12 B2 3136 3136 31.76      
13 B2 1531 1531 0.00      
14 B2 1185 1185 0.93      
15 B2 883 883 9.22      

Unscaled Zero Point Vibrational Energy (zpe) 12814.1 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 12814.1 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/Def2TZVPP
ABC
0.86290 0.74320 0.47581

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.850
C2 0.000 0.732 -0.371
C3 0.000 -0.732 -0.371
H4 0.918 1.263 -0.588
H5 -0.918 1.263 -0.588
H6 -0.918 -1.263 -0.588
H7 0.918 -1.263 -0.588

Atom - Atom Distances (Å)
  O1 C2 C3 H4 H5 H6 H7
O11.42391.42392.12282.12282.12282.1228
C21.42391.46381.08221.08222.20662.2066
C31.42391.46382.20662.20661.08221.0822
H42.12281.08222.20661.83533.12242.5262
H52.12281.08222.20661.83532.52623.1224
H62.12282.20661.08223.12242.52621.8353
H72.12282.20661.08222.52623.12241.8353

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 59.069 O1 C2 H4 115.099
O1 C2 H5 115.099 O1 C3 C2 59.069
O1 C3 H6 115.099 O1 C3 H7 115.099
C2 O1 C3 61.862 C2 C3 H6 119.394
C2 C3 H7 119.394 C3 C2 H4 119.394
C3 C2 H5 119.394 H4 C2 H5 115.969
H6 C3 H7 115.969
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability