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

using model chemistry: QCISD(T)=FULL/aug-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 QCISD(T)=FULL/aug-cc-pVTZ
 hartrees
Energy at 0K-153.610628
Energy at 298.15K 
HF Energy-152.928615
Nuclear repulsion energy75.355364
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 QCISD(T)=FULL/aug-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 3129 3129        
2 A1 1554 1554        
3 A1 1304 1304        
4 A1 1154 1154        
5 A1 900 900        
6 A2 3191 3191        
7 A2 1175 1175        
8 A2 1048 1048        
9 B1 3207 3207        
10 B1 1179 1179        
11 B1 815 815        
12 B2 3118 3118        
13 B2 1513 1513        
14 B2 1163 1163        
15 B2 843 843        

Unscaled Zero Point Vibrational Energy (zpe) 12646.1 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 12646.1 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 QCISD(T)=FULL/aug-cc-pVTZ
ABC
0.85508 0.74414 0.47401

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.855
C2 0.000 0.732 -0.374
C3 0.000 -0.732 -0.374
H4 0.919 1.261 -0.589
H5 -0.919 1.261 -0.589
H6 -0.919 -1.261 -0.589
H7 0.919 -1.261 -0.589

Atom - Atom Distances (Å)
  O1 C2 C3 H4 H5 H6 H7
O11.42981.42982.12532.12532.12532.1253
C21.42981.46311.08181.08182.20442.2044
C31.42981.46312.20442.20441.08181.0818
H42.12531.08182.20441.83743.12002.5216
H52.12531.08182.20441.83742.52163.1200
H62.12532.20441.08183.12002.52161.8374
H72.12532.20441.08182.52163.12001.8374

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 59.228 O1 C2 H4 114.899
O1 C2 H5 114.899 O1 C3 C2 59.228
O1 C3 H6 114.899 O1 C3 H7 114.899
C2 O1 C3 61.545 C2 C3 H6 119.291
C2 C3 H7 119.291 C3 C2 H4 119.291
C3 C2 H5 119.291 H4 C2 H5 116.253
H6 C3 H7 116.253
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability