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

using model chemistry: BLYP/STO-3G

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/STO-3G
 hartrees
Energy at 0K-151.725359
Energy at 298.15K 
HF Energy-151.725359
Nuclear repulsion energy72.258528
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/STO-3G
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 3199 2960 1.24 80.65 0.09 0.16
2 A1 1606 1486 0.37 14.96 0.74 0.85
3 A1 1304 1206 1.76 14.63 0.25 0.41
4 A1 1182 1093 4.73 2.35 0.30 0.47
5 A1 923 854 6.85 7.59 0.74 0.85
6 A2 3327 3078 0.00 57.00 0.75 0.86
7 A2 1172 1085 0.00 6.45 0.75 0.86
8 A2 1017 941 0.00 0.21 0.75 0.86
9 B1 3338 3089 12.78 9.85 0.75 0.86
10 B1 1124 1040 3.59 11.41 0.75 0.86
11 B1 839 777 0.02 4.48 0.75 0.86
12 B2 3191 2952 0.02 6.27 0.75 0.86
13 B2 1576 1458 0.69 6.23 0.75 0.86
14 B2 1135 1050 2.23 1.08 0.75 0.86
15 B2 967 894 0.48 4.91 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 12949.3 cm-1
Scaled (by 0.9252) Zero Point Vibrational Energy (zpe) 11980.7 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/STO-3G
ABC
0.77561 0.69356 0.43239

See section I.F.4 to change rotational constant units
Geometric Data calculated at BLYP/STO-3G

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.904
C2 0.000 0.761 -0.387
C3 0.000 -0.761 -0.387
H4 0.935 1.308 -0.646
H5 -0.935 1.308 -0.646
H6 -0.935 -1.308 -0.646
H7 0.935 -1.308 -0.646

Atom - Atom Distances (Å)
  O1 C2 C3 H4 H5 H6 H7
O11.49881.49882.23322.23322.23322.2332
C21.49881.52111.11411.11412.28482.2848
C31.49881.52112.28482.28481.11411.1141
H42.23321.11412.28481.87073.21592.6158
H52.23321.11412.28481.87072.61583.2159
H62.23322.28481.11413.21592.61581.8707
H72.23322.28481.11412.61583.21591.8707

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 59.506 O1 C2 H4 116.684
O1 C2 H5 116.684 O1 C3 C2 59.506
O1 C3 H6 116.684 O1 C3 H7 116.684
C2 O1 C3 60.988 C2 C3 H6 119.426
C2 C3 H7 119.426 C3 C2 H4 119.426
C3 C2 H5 119.426 H4 C2 H5 114.189
H6 C3 H7 114.189
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/STO-3G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.147      
2 C -0.086      
3 C -0.086      
4 H 0.080      
5 H 0.080      
6 H 0.080      
7 H 0.080      


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 -1.165 1.165
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -16.240 0.000 0.000
y 0.000 -15.896 0.000
z 0.000 0.000 -18.521
Traceless
 xyz
x 0.969 0.000 0.000
y 0.000 1.484 0.000
z 0.000 0.000 -2.453
Polar
3z2-r2-4.906
x2-y2-0.344
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.692 0.000 0.000
y 0.000 2.564 0.000
z 0.000 0.000 1.462


<r2> (average value of r2) Å2
<r2> 37.838
(<r2>)1/2 6.151