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

using model chemistry: wB97X-D/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 wB97X-D/6-31G
 hartrees
Energy at 0K-153.677243
Energy at 298.15K 
HF Energy-153.677243
Nuclear repulsion energy73.853514
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 wB97X-D/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 3173 3173 4.34 195.56 0.09 0.17
2 A1 1574 1574 0.32 4.84 0.75 0.86
3 A1 1294 1294 8.64 23.70 0.14 0.25
4 A1 1162 1162 5.04 5.92 0.36 0.53
5 A1 854 854 50.74 12.54 0.71 0.83
6 A2 3258 3258 0.00 105.99 0.75 0.86
7 A2 1212 1212 0.00 5.47 0.75 0.86
8 A2 1028 1028 0.00 0.01 0.75 0.86
9 B1 3275 3275 43.71 13.46 0.75 0.86
10 B1 1141 1141 2.06 17.91 0.75 0.86
11 B1 849 849 0.12 9.95 0.75 0.86
12 B2 3162 3162 22.98 8.51 0.75 0.86
13 B2 1548 1548 0.33 5.81 0.75 0.86
14 B2 1179 1179 10.08 3.41 0.75 0.86
15 B2 799 799 5.85 9.51 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 12752.9 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 12752.9 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 wB97X-D/6-31G
ABC
0.80038 0.73264 0.45219

See section I.F.4 to change rotational constant units
Geometric Data calculated at wB97X-D/6-31G

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.889
C2 0.000 0.738 -0.391
C3 0.000 -0.738 -0.391
H4 0.918 1.274 -0.607
H5 -0.918 1.274 -0.607
H6 -0.918 -1.274 -0.607
H7 0.918 -1.274 -0.607

Atom - Atom Distances (Å)
  O1 C2 C3 H4 H5 H6 H7
O11.47751.47752.16892.16892.16892.1689
C21.47751.47611.08451.08452.22182.2218
C31.47751.47612.22182.22181.08451.0845
H42.16891.08452.22181.83563.13982.5473
H52.16891.08452.22181.83562.54733.1398
H62.16892.22181.08453.13982.54731.8356
H72.16892.22181.08452.54733.13981.8356

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 60.029 O1 C2 H4 114.816
O1 C2 H5 114.816 O1 C3 C2 60.029
O1 C3 H6 114.816 O1 C3 H7 114.816
C2 O1 C3 59.941 C2 C3 H6 119.594
C2 C3 H7 119.594 C3 C2 H4 119.594
C3 C2 H5 119.594 H4 C2 H5 115.623
H6 C3 H7 115.623
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at wB97X-D/6-31G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.481      
2 C -0.126      
3 C -0.126      
4 H 0.183      
5 H 0.183      
6 H 0.183      
7 H 0.183      


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 -2.599 2.599
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -17.111 0.000 0.000
y 0.000 -16.007 0.000
z 0.000 0.000 -21.031
Traceless
 xyz
x 1.408 0.000 0.000
y 0.000 3.064 0.000
z 0.000 0.000 -4.472
Polar
3z2-r2-8.944
x2-y2-1.104
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.056 0.000 0.000
y 0.000 4.165 0.000
z 0.000 0.000 2.777


<r2> (average value of r2) Å2
<r2> 37.301
(<r2>)1/2 6.107