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

using model chemistry: B2PLYP/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 B2PLYP/6-31G
 hartrees
Energy at 0K-153.513536
Energy at 298.15K 
HF Energy-153.407186
Nuclear repulsion energy73.150193
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 B2PLYP/6-31G
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A1 3175 3175 3.99 192.15 0.09 0.17
2 A1 1575 1575 0.30 6.50 0.73 0.84
3 A1 1274 1274 5.08 19.37 0.13 0.22
4 A1 1149 1149 5.01 8.46 0.34 0.51
5 A1 813 813 41.15 12.37 0.65 0.79
6 A2 3258 3258 0.00 103.78 0.75 0.86
7 A2 1220 1220 0.00 5.82 0.75 0.86
8 A2 1015 1015 0.00 0.00 0.75 0.86
9 B1 3275 3275 43.52 13.30 0.75 0.86
10 B1 1120 1120 1.45 18.14 0.75 0.86
11 B1 844 844 0.04 10.61 0.75 0.86
12 B2 3165 3165 21.13 8.33 0.75 0.86
13 B2 1557 1557 0.02 5.67 0.75 0.86
14 B2 1164 1164 9.64 4.02 0.75 0.86
15 B2 733 733 4.93 8.84 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 12668.3 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 12668.3 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 B2PLYP/6-31G
ABC
0.77239 0.72987 0.44202

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP/6-31G

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.908
C2 0.000 0.740 -0.401
C3 0.000 -0.740 -0.401
H4 0.917 1.277 -0.614
H5 -0.917 1.277 -0.614
H6 -0.917 -1.277 -0.614
H7 0.917 -1.277 -0.614

Atom - Atom Distances (Å)
  O1 C2 C3 H4 H5 H6 H7
O11.50341.50342.18882.18882.18882.1888
C21.50341.47921.08451.08452.22592.2259
C31.50341.47922.22592.22591.08451.0845
H42.18881.08452.22591.83463.14492.5544
H52.18881.08452.22591.83462.55443.1449
H62.18882.22591.08453.14492.55441.8346
H72.18882.22591.08452.55443.14491.8346

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 60.530 O1 C2 H4 114.544
O1 C2 H5 114.544 O1 C3 C2 60.530
O1 C3 H6 114.544 O1 C3 H7 114.544
C2 O1 C3 58.939 C2 C3 H6 119.716
C2 C3 H7 119.716 C3 C2 H4 119.716
C3 C2 H5 119.716 H4 C2 H5 115.527
H6 C3 H7 115.527
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B2PLYP/6-31G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.478      
2 C -0.086      
3 C -0.086      
4 H 0.163      
5 H 0.163      
6 H 0.163      
7 H 0.163      


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 -2.610 2.610
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -17.478 0.000 0.000
y 0.000 -16.366 0.000
z 0.000 0.000 -21.155
Traceless
 xyz
x 1.282 0.000 0.000
y 0.000 2.951 0.000
z 0.000 0.000 -4.233
Polar
3z2-r2-8.465
x2-y2-1.113
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.051 0.000 0.000
y 0.000 4.164 0.000
z 0.000 0.000 2.861


<r2> (average value of r2) Å2
<r2> 37.938
(<r2>)1/2 6.159