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

using model chemistry: B3LYPultrafine/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 B3LYPultrafine/6-31G*
 hartrees
Energy at 0K-153.786262
Energy at 298.15K 
HF Energy-153.786262
Nuclear repulsion energy75.097124
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 B3LYPultrafine/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 3109 2978 12.48 193.74 0.10 0.18
2 A1 1571 1505 3.90 4.05 0.75 0.86
3 A1 1313 1258 11.75 22.77 0.17 0.28
4 A1 1164 1115 0.22 2.53 0.46 0.63
5 A1 902 864 57.59 11.76 0.75 0.86
6 A2 3179 3045 0.00 110.21 0.75 0.86
7 A2 1189 1139 0.00 5.23 0.75 0.86
8 A2 1045 1001 0.00 0.20 0.75 0.86
9 B1 3195 3060 64.58 15.32 0.75 0.86
10 B1 1174 1125 2.81 15.72 0.75 0.86
11 B1 821 786 0.10 9.50 0.75 0.86
12 B2 3101 2971 41.76 9.78 0.75 0.86
13 B2 1532 1467 0.99 7.01 0.75 0.86
14 B2 1147 1099 1.81 3.82 0.75 0.86
15 B2 861 824 12.94 4.52 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 12650.3 cm-1
Scaled (by 0.958) Zero Point Vibrational Energy (zpe) 12119.0 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 B3LYPultrafine/6-31G*
ABC
0.85433 0.73554 0.47064

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYPultrafine/6-31G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.855
C2 0.000 0.735 -0.372
C3 0.000 -0.735 -0.372
H4 0.921 1.275 -0.595
H5 -0.921 1.275 -0.595
H6 -0.921 -1.275 -0.595
H7 0.921 -1.275 -0.595

Atom - Atom Distances (Å)
  O1 C2 C3 H4 H5 H6 H7
O11.43011.43012.13882.13882.13882.1388
C21.43011.46911.09041.09042.22152.2215
C31.43011.46912.22152.22151.09041.0904
H42.13881.09042.22151.84113.14502.5498
H52.13881.09042.22151.84112.54983.1450
H62.13882.22151.09043.14502.54981.8411
H72.13882.22151.09042.54983.14501.8411

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 59.094 O1 C2 H4 115.451
O1 C2 H5 115.451 O1 C3 C2 59.094
O1 C3 H6 115.451 O1 C3 H7 115.451
C2 O1 C3 61.812 C2 C3 H6 119.707
C2 C3 H7 119.707 C3 C2 H4 119.707
C3 C2 H5 119.707 H4 C2 H5 115.179
H6 C3 H7 115.179
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYPultrafine/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.424      
2 C -0.094      
3 C -0.094      
4 H 0.153      
5 H 0.153      
6 H 0.153      
7 H 0.153      


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 -1.950 1.950
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -17.212 0.000 0.000
y 0.000 -16.332 0.000
z 0.000 0.000 -20.319
Traceless
 xyz
x 1.114 0.000 0.000
y 0.000 2.434 0.000
z 0.000 0.000 -3.547
Polar
3z2-r2-7.094
x2-y2-0.880
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.275 0.000 0.000
y 0.000 4.191 0.000
z 0.000 0.000 2.676


<r2> (average value of r2) Å2
<r2> 36.505
(<r2>)1/2 6.042