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

using model chemistry: HF/cc-pCVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at HF/cc-pCVTZ
 hartrees
Energy at 0K-152.928037
Energy at 298.15K-152.932847
Nuclear repulsion energy76.507628
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 HF/cc-pCVTZ
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 3252 2969 13.97      
2 A1 1679 1533 3.85      
3 A1 1415 1292 19.31      
4 A1 1291 1179 3.64      
5 A1 979 894 89.34      
6 A2 3321 3032 0.00      
7 A2 1275 1164 0.00      
8 A2 1150 1050 0.00      
9 B1 3338 3048 57.23      
10 B1 1284 1172 7.97      
11 B1 876 800 0.11      
12 B2 3240 2959 51.26      
13 B2 1629 1488 0.03      
14 B2 1293 1181 0.02      
15 B2 967 883 11.65      

Unscaled Zero Point Vibrational Energy (zpe) 13493.5 cm-1
Scaled (by 0.9131) Zero Point Vibrational Energy (zpe) 12320.9 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 HF/cc-pCVTZ
ABC
0.89716 0.75501 0.48913

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/cc-pCVTZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.832
C2 0.000 0.725 -0.363
C3 0.000 -0.725 -0.363
H4 0.908 1.259 -0.576
H5 -0.908 1.259 -0.576
H6 -0.908 -1.259 -0.576
H7 0.908 -1.259 -0.576

Atom - Atom Distances (Å)
  O1 C2 C3 H4 H5 H6 H7
O11.39791.39792.09652.09652.09652.0965
C21.39791.44981.07521.07522.19242.1924
C31.39791.44982.19242.19241.07521.0752
H42.09651.07522.19241.81683.10502.5180
H52.09651.07522.19241.81682.51803.1050
H62.09652.19241.07523.10502.51801.8168
H72.09652.19241.07522.51803.10501.8168

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 58.764 O1 C2 H4 115.309
O1 C2 H5 115.309 O1 C3 C2 58.764
O1 C3 H6 115.309 O1 C3 H7 115.309
C2 O1 C3 62.473 C2 C3 H6 119.786
C2 C3 H7 119.786 C3 C2 H4 119.786
C3 C2 H5 119.786 H4 C2 H5 115.308
H6 C3 H7 115.308
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/cc-pCVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.378      
2 C 0.038      
3 C 0.038      
4 H 0.075      
5 H 0.075      
6 H 0.075      
7 H 0.075      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.000 0.000 -2.068 2.068
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -17.216 0.000 0.000
y 0.000 -16.233 0.000
z 0.000 0.000 -20.744
Traceless
 xyz
x 1.272 0.000 0.000
y 0.000 2.747 0.000
z 0.000 0.000 -4.019
Polar
3z2-r2-8.038
x2-y2-0.983
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.372 0.000 0.000
y 0.000 4.349 0.000
z 0.000 0.000 3.116


<r2> (average value of r2) Å2
<r2> 0.000
(<r2>)1/2 0.000