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

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

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-pCVDZ
 hartrees
Energy at 0K-153.500676
Energy at 298.15K-153.505356
Nuclear repulsion energy74.742245
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-pCVDZ
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 3117 3020        
2 A1 1546 1498        
3 A1 1300 1260        
4 A1 1155 1119        
5 A1 898 870        
6 A2 3199 3099        
7 A2 1168 1131        
8 A2 1039 1007        
9 B1 3214 3114        
10 B1 1165 1129        
11 B1 814 789        
12 B2 3107 3010        
13 B2 1499 1452        
14 B2 1140 1104        
15 B2 848 822        

Unscaled Zero Point Vibrational Energy (zpe) 12604.5 cm-1
Scaled (by 0.9688) Zero Point Vibrational Energy (zpe) 12211.2 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 CCSD(T)=FULL/cc-pCVDZ
ABC
0.84786 0.72696 0.46693

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.857
C2 0.000 0.739 -0.372
C3 0.000 -0.739 -0.372
H4 0.930 1.278 -0.599
H5 -0.930 1.278 -0.599
H6 -0.930 -1.278 -0.599
H7 0.930 -1.278 -0.599

Atom - Atom Distances (Å)
  O1 C2 C3 H4 H5 H6 H7
O11.43451.43452.14942.14942.14942.1494
C21.43451.47851.09841.09842.23312.2331
C31.43451.47852.23312.23311.09841.0984
H42.14941.09842.23311.85933.16142.5568
H52.14941.09842.23311.85932.55683.1614
H62.14942.23311.09843.16142.55681.8593
H72.14942.23311.09842.55683.16141.8593

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 58.980 O1 C2 H4 115.477
O1 C2 H5 115.477 O1 C3 C2 58.980
O1 C3 H6 115.477 O1 C3 H7 115.477
C2 O1 C3 62.040 C2 C3 H6 119.395
C2 C3 H7 119.395 C3 C2 H4 119.395
C3 C2 H5 119.395 H4 C2 H5 115.636
H6 C3 H7 115.636
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability