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

using model chemistry: TPSSh/6-311G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at TPSSh/6-311G**
 hartrees
Energy at 0K-153.838847
Energy at 298.15K 
HF Energy-153.838847
Nuclear repulsion energy75.144594
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 TPSSh/6-311G**
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 3086 3086 14.08 229.73 0.09 0.17
2 A1 1547 1547 3.59 2.07 0.74 0.85
3 A1 1304 1304 13.96 25.91 0.15 0.26
4 A1 1146 1146 0.03 1.45 0.50 0.67
5 A1 905 905 66.70 10.81 0.74 0.85
6 A2 3160 3160 0.00 124.70 0.75 0.86
7 A2 1174 1174 0.00 2.99 0.75 0.86
8 A2 1040 1040 0.00 0.03 0.75 0.86
9 B1 3176 3176 68.98 19.00 0.75 0.86
10 B1 1164 1164 3.84 11.38 0.75 0.86
11 B1 813 813 0.00 6.50 0.75 0.86
12 B2 3078 3078 48.24 11.03 0.75 0.86
13 B2 1513 1513 0.21 6.33 0.75 0.86
14 B2 1138 1138 2.11 2.35 0.75 0.86
15 B2 853 853 12.06 3.72 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 12548.0 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 12548.0 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 TPSSh/6-311G**
ABC
0.85271 0.73844 0.47135

See section I.F.4 to change rotational constant units
Geometric Data calculated at TPSSh/6-311G**

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.856
C2 0.000 0.733 -0.373
C3 0.000 -0.733 -0.373
H4 0.921 1.270 -0.592
H5 -0.921 1.270 -0.592
H6 -0.921 -1.270 -0.592
H7 0.921 -1.270 -0.592

Atom - Atom Distances (Å)
  O1 C2 C3 H4 H5 H6 H7
O11.43141.43142.13482.13482.13482.1348
C21.43141.46691.08781.08782.21562.2156
C31.43141.46692.21562.21561.08781.0878
H42.13481.08782.21561.84123.13702.5398
H52.13481.08782.21561.84122.53983.1370
H62.13482.21561.08783.13702.53981.8412
H72.13482.21561.08782.53983.13701.8412

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 59.177 O1 C2 H4 115.185
O1 C2 H5 115.185 O1 C3 C2 59.177
O1 C3 H6 115.185 O1 C3 H7 115.185
C2 O1 C3 61.646 C2 C3 H6 119.548
C2 C3 H7 119.548 C3 C2 H4 119.548
C3 C2 H5 119.548 H4 C2 H5 115.631
H6 C3 H7 115.631
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at TPSSh/6-311G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.318      
2 C -0.082      
3 C -0.082      
4 H 0.120      
5 H 0.120      
6 H 0.120      
7 H 0.120      


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 -1.940 1.940
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.409 0.000 0.000
y 0.000 4.426 0.000
z 0.000 0.000 3.015


<r2> (average value of r2) Å2
<r2> 36.490
(<r2>)1/2 6.041