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

using model chemistry: BLYP/6-311G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at BLYP/6-311G*
 hartrees
Energy at 0K-153.769965
Energy at 298.15K 
HF Energy-153.769965
Nuclear repulsion energy74.396311
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 BLYP/6-311G*
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 2996 2989 17.17 231.62 0.10 0.18
2 A1 1506 1502 2.64 3.05 0.70 0.82
3 A1 1250 1247 11.95 23.54 0.15 0.26
4 A1 1099 1096 0.12 1.99 0.61 0.75
5 A1 846 844 61.60 11.21 0.75 0.85
6 A2 3064 3057 0.00 136.06 0.75 0.86
7 A2 1151 1148 0.00 3.75 0.75 0.86
8 A2 1007 1004 0.00 0.06 0.75 0.86
9 B1 3081 3073 88.07 21.94 0.75 0.86
10 B1 1132 1129 2.59 13.47 0.75 0.86
11 B1 799 797 0.04 8.78 0.75 0.86
12 B2 2990 2982 59.40 12.92 0.75 0.86
13 B2 1477 1473 0.40 7.25 0.75 0.86
14 B2 1091 1088 3.92 3.28 0.75 0.86
15 B2 778 776 13.24 2.99 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 12132.6 cm-1
Scaled (by 0.9975) Zero Point Vibrational Energy (zpe) 12102.3 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 BLYP/6-311G*
ABC
0.83215 0.72701 0.46138

See section I.F.4 to change rotational constant units
Geometric Data calculated at BLYP/6-311G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.868
C2 0.000 0.739 -0.379
C3 0.000 -0.739 -0.379
H4 0.926 1.282 -0.600
H5 -0.926 1.282 -0.600
H6 -0.926 -1.282 -0.600
H7 0.926 -1.282 -0.600

Atom - Atom Distances (Å)
  O1 C2 C3 H4 H5 H6 H7
O11.44901.44902.15692.15692.15692.1569
C21.44901.47831.09541.09542.23362.2336
C31.44901.47832.23362.23361.09541.0954
H42.15691.09542.23361.85133.16192.5632
H52.15691.09542.23361.85132.56323.1619
H62.15692.23361.09543.16192.56321.8513
H72.15692.23361.09542.56323.16191.8513

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 59.329 O1 C2 H4 115.218
O1 C2 H5 115.218 O1 C3 C2 59.329
O1 C3 H6 115.218 O1 C3 H7 115.218
C2 O1 C3 61.341 C2 C3 H6 119.684
C2 C3 H7 119.684 C3 C2 H4 119.684
C3 C2 H5 119.684 H4 C2 H5 115.353
H6 C3 H7 115.353
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/6-311G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.275      
2 C -0.257      
3 C -0.257      
4 H 0.197      
5 H 0.197      
6 H 0.197      
7 H 0.197      


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 -1.906 1.906
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -17.517 0.000 0.000
y 0.000 -16.750 0.000
z 0.000 0.000 -20.772
Traceless
 xyz
x 1.244 0.000 0.000
y 0.000 2.394 0.000
z 0.000 0.000 -3.638
Polar
3z2-r2-7.276
x2-y2-0.766
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.508 0.000 0.000
y 0.000 4.523 0.000
z 0.000 0.000 3.039


<r2> (average value of r2) Å2
<r2> 37.193
(<r2>)1/2 6.099