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

using model chemistry: CCSD=FULL/cc-pVTZ

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=FULL/cc-pVTZ
 hartrees
Energy at 0K-153.564934
Energy at 298.15K 
HF Energy-152.926678
Nuclear repulsion energy75.765121
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=FULL/cc-pVTZ
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 3162 2998 12.12      
2 A1 1583 1500 2.53      
3 A1 1336 1267 13.26      
4 A1 1192 1130 0.19      
5 A1 929 881 64.34      
6 A2 3220 3053        
7 A2 1196 1134        
8 A2 1078 1022        
9 B1 3236 3068 38.86      
10 B1 1206 1143 4.46      
11 B1 832 789 0.02      
12 B2 3151 2988 33.27      
13 B2 1541 1461 0.00      
14 B2 1189 1128 1.06      
15 B2 890 844 8.90      

Unscaled Zero Point Vibrational Energy (zpe) 12870.3 cm-1
Scaled (by 0.9481) Zero Point Vibrational Energy (zpe) 12202.4 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=FULL/cc-pVTZ
ABC
0.86875 0.74879 0.47923

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.848
C2 0.000 0.729 -0.369
C3 0.000 -0.729 -0.369
H4 0.914 1.257 -0.589
H5 -0.914 1.257 -0.589
H6 -0.914 -1.257 -0.589
H7 0.914 -1.257 -0.589

Atom - Atom Distances (Å)
  O1 C2 C3 H4 H5 H6 H7
O11.41851.41852.11672.11672.11672.1167
C21.41851.45891.07851.07852.19812.1981
C31.41851.45892.19812.19811.07851.0785
H42.11671.07852.19811.82883.10932.5147
H52.11671.07852.19811.82882.51473.1093
H62.11672.19811.07853.10932.51471.8288
H72.11672.19811.07852.51473.10931.8288

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 59.054 O1 C2 H4 115.252
O1 C2 H5 115.252 O1 C3 C2 59.054
O1 C3 H6 115.252 O1 C3 H7 115.252
C2 O1 C3 61.891 C2 C3 H6 119.307
C2 C3 H7 119.307 C3 C2 H4 119.307
C3 C2 H5 119.307 H4 C2 H5 115.953
H6 C3 H7 115.953
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability