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

using model chemistry: PBEPBE/6-31G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at PBEPBE/6-31G
 hartrees
Energy at 0K-153.548527
Energy at 298.15K 
HF Energy-153.548527
Nuclear repulsion energy73.003912
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 PBEPBE/6-31G
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 3069 3027 6.83 208.82 0.09 0.16
2 A1 1514 1493 0.56 6.85 0.69 0.82
3 A1 1246 1229 6.16 21.19 0.13 0.24
4 A1 1099 1084 5.72 4.99 0.52 0.68
5 A1 827 816 41.55 11.34 0.71 0.83
6 A2 3148 3105 0.00 114.26 0.75 0.86
7 A2 1165 1149 0.00 6.38 0.75 0.86
8 A2 976 963 0.00 0.00 0.75 0.86
9 B1 3167 3123 56.21 17.03 0.75 0.86
10 B1 1087 1072 0.53 19.40 0.75 0.86
11 B1 808 797 0.00 12.68 0.75 0.86
12 B2 3060 3018 27.21 10.83 0.75 0.86
13 B2 1496 1475 0.05 6.98 0.75 0.86
14 B2 1108 1092 11.47 5.08 0.75 0.86
15 B2 741 731 8.51 5.51 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 12255.5 cm-1
Scaled (by 0.9862) Zero Point Vibrational Energy (zpe) 12086.4 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 PBEPBE/6-31G
ABC
0.77551 0.72180 0.44145

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBEPBE/6-31G

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.905
C2 0.000 0.743 -0.397
C3 0.000 -0.743 -0.397
H4 0.925 1.285 -0.619
H5 -0.925 1.285 -0.619
H6 -0.925 -1.285 -0.619
H7 0.925 -1.285 -0.619

Atom - Atom Distances (Å)
  O1 C2 C3 H4 H5 H6 H7
O11.49881.49882.19772.19772.19772.1977
C21.49881.48601.09521.09522.23992.2399
C31.49881.48602.23992.23991.09521.0952
H42.19771.09522.23991.85103.16662.5693
H52.19771.09522.23991.85102.56933.1666
H62.19772.23991.09523.16662.56931.8510
H72.19772.23991.09522.56933.16661.8510

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 60.282 O1 C2 H4 114.938
O1 C2 H5 114.938 O1 C3 C2 60.282
O1 C3 H6 114.938 O1 C3 H7 114.938
C2 O1 C3 59.437 C2 C3 H6 119.640
C2 C3 H7 119.640 C3 C2 H4 119.640
C3 C2 H5 119.640 H4 C2 H5 115.357
H6 C3 H7 115.357
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/6-31G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.428      
2 C -0.126      
3 C -0.126      
4 H 0.170      
5 H 0.170      
6 H 0.170      
7 H 0.170      


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 -2.341 2.341
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -17.321 0.000 0.000
y 0.000 -16.330 0.000
z 0.000 0.000 -20.876
Traceless
 xyz
x 1.282 0.000 0.000
y 0.000 2.769 0.000
z 0.000 0.000 -4.050
Polar
3z2-r2-8.100
x2-y2-0.991
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.178 0.000 0.000
y 0.000 4.271 0.000
z 0.000 0.000 2.887


<r2> (average value of r2) Å2
<r2> 37.978
(<r2>)1/2 6.163