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

using model chemistry: CCSD(T)=FULL/6-311+G(3df,2p)

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/6-311+G(3df,2p)
 hartrees
Energy at 0K-153.610527
Energy at 298.15K 
HF Energy-152.924698
Nuclear repulsion energy75.397110
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/6-311+G(3df,2p)
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A1 3125 3125        
2 A1 1550 1550        
3 A1 1310 1310        
4 A1 1161 1161        
5 A1 906 906        
6 A2 3206 3206        
7 A2 1179 1179        
8 A2 1060 1060        
9 B1 3220 3220        
10 B1 1182 1182        
11 B1 819 819        
12 B2 3115 3115        
13 B2 1511 1511        
14 B2 1170 1170        
15 B2 858 858        

Unscaled Zero Point Vibrational Energy (zpe) 12685.6 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 12685.6 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/6-311+G(3df,2p)
ABC
0.85926 0.74253 0.47470

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCSD(T)=FULL/6-311+G(3df,2p)

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.852
C2 0.000 0.732 -0.372
C3 0.000 -0.732 -0.372
H4 0.919 1.265 -0.588
H5 -0.919 1.265 -0.588
H6 -0.919 -1.265 -0.588
H7 0.919 -1.265 -0.588

Atom - Atom Distances (Å)
  O1 C2 C3 H4 H5 H6 H7
O11.42661.42662.12532.12532.12532.1253
C21.42661.46351.08391.08392.20832.2083
C31.42661.46352.20832.20831.08391.0839
H42.12531.08392.20831.83803.12662.5293
H52.12531.08392.20831.83802.52933.1266
H62.12532.20831.08393.12662.52931.8380
H72.12532.20831.08392.52933.12661.8380

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 59.140 O1 C2 H4 115.000
O1 C2 H5 115.000 O1 C3 C2 59.140
O1 C3 H6 115.000 O1 C3 H7 115.000
C2 O1 C3 61.720 C2 C3 H6 119.449
C2 C3 H7 119.449 C3 C2 H4 119.449
C3 C2 H5 119.449 H4 C2 H5 115.960
H6 C3 H7 115.960
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability