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

using model chemistry: CCSD(T)/daug-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)/daug-cc-pVDZ
 hartrees
Energy at 0K-153.420542
Energy at 298.15K 
HF Energy-152.886917
Nuclear repulsion energy74.244924
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)/daug-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 3108 3108        
2 A1 1521 1521        
3 A1 1276 1276        
4 A1 1124 1124        
5 A1 870 870        
6 A2 3195 3195        
7 A2 1154 1154        
8 A2 1027 1027        
9 B1 3211 3211        
10 B1 1141 1141        
11 B1 798 798        
12 B2 3100 3100        
13 B2 1483 1483        
14 B2 1134 1134        
15 B2 802 802        

Unscaled Zero Point Vibrational Energy (zpe) 12472.5 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 12472.5 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)/daug-cc-pVDZ
ABC
0.82820 0.72397 0.46005

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.869
C2 0.000 0.741 -0.381
C3 0.000 -0.741 -0.381
H4 0.932 1.279 -0.595
H5 -0.932 1.279 -0.595
H6 -0.932 -1.279 -0.595
H7 0.932 -1.279 -0.595

Atom - Atom Distances (Å)
  O1 C2 C3 H4 H5 H6 H7
O11.45311.45312.15542.15542.15542.1554
C21.45311.48281.09661.09662.23512.2351
C31.45311.48282.23512.23511.09661.0966
H42.15541.09662.23511.86313.16462.5580
H52.15541.09662.23511.86312.55803.1646
H62.15542.23511.09663.16462.55801.8631
H72.15542.23511.09662.55803.16461.8631

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 59.323 O1 C2 H4 114.694
O1 C2 H5 114.694 O1 C3 C2 59.323
O1 C3 H6 114.694 O1 C3 H7 114.694
C2 O1 C3 61.355 C2 C3 H6 119.357
C2 C3 H7 119.357 C3 C2 H4 119.357
C3 C2 H5 119.357 H4 C2 H5 116.316
H6 C3 H7 116.316
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability