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

using model chemistry: BLYP/6-31+G**

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/6-31+G**
 hartrees
Energy at 0K-153.745960
Energy at 298.15K 
HF Energy-153.745960
Nuclear repulsion energy74.134189
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/6-31+G**
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 3018 3002 17.59 231.68 0.09 0.17
2 A1 1496 1488 4.30 3.48 0.67 0.80
3 A1 1248 1241 12.12 30.38 0.14 0.24
4 A1 1103 1097 0.09 3.06 0.14 0.25
5 A1 840 836 72.27 11.96 0.75 0.86
6 A2 3092 3076 0.00 131.25 0.75 0.86
7 A2 1142 1136 0.00 2.99 0.75 0.86
8 A2 1001 996 0.00 0.22 0.75 0.86
9 B1 3106 3090 57.35 30.90 0.75 0.86
10 B1 1121 1115 2.29 6.24 0.75 0.86
11 B1 792 788 0.09 5.49 0.75 0.86
12 B2 3013 2997 42.44 13.45 0.75 0.86
13 B2 1469 1461 0.26 7.09 0.75 0.86
14 B2 1110 1104 1.28 1.55 0.75 0.86
15 B2 776 772 11.42 4.38 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 12163.0 cm-1
Scaled (by 0.9947) Zero Point Vibrational Energy (zpe) 12098.5 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/6-31+G**
ABC
0.82433 0.72345 0.45798

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.872
C2 0.000 0.741 -0.382
C3 0.000 -0.741 -0.382
H4 0.928 1.284 -0.598
H5 -0.928 1.284 -0.598
H6 -0.928 -1.284 -0.598
H7 0.928 -1.284 -0.598

Atom - Atom Distances (Å)
  O1 C2 C3 H4 H5 H6 H7
O11.45661.45662.16142.16142.16142.1614
C21.45661.48221.09681.09682.23832.2383
C31.45661.48222.23832.23831.09681.0968
H42.16141.09682.23831.85603.16892.5685
H52.16141.09682.23831.85602.56853.1689
H62.16142.23831.09683.16892.56851.8560
H72.16142.23831.09682.56853.16891.8560

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 59.417 O1 C2 H4 114.934
O1 C2 H5 114.934 O1 C3 C2 59.417
O1 C3 H6 114.934 O1 C3 H7 114.934
C2 O1 C3 61.165 C2 C3 H6 119.686
C2 C3 H7 119.686 C3 C2 H4 119.686
C3 C2 H5 119.686 H4 C2 H5 115.584
H6 C3 H7 115.584
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.317      
2 C -0.120      
3 C -0.120      
4 H 0.139      
5 H 0.139      
6 H 0.139      
7 H 0.139      


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 -2.093 2.093
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -17.853 0.000 0.000
y 0.000 -16.812 0.000
z 0.000 0.000 -21.385
Traceless
 xyz
x 1.245 0.000 0.000
y 0.000 2.807 0.000
z 0.000 0.000 -4.052
Polar
3z2-r2-8.105
x2-y2-1.041
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.787 0.000 0.000
y 0.000 4.751 0.000
z 0.000 0.000 3.645


<r2> (average value of r2) Å2
<r2> 37.567
(<r2>)1/2 6.129