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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-153.618829
Energy at 298.15K 
HF Energy-153.474136
Nuclear repulsion energy75.101146
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
4/u)
Dep P Dep U
1 A1 3150 2990 11.29 188.59 0.10 0.18
2 A1 1588 1507 3.33 3.99 0.75 0.86
3 A1 1322 1255 9.83 22.41 0.16 0.27
4 A1 1177 1117 0.06 3.14 0.41 0.58
5 A1 908 862 57.94 11.48 0.75 0.86
6 A2 3225 3061 0.00 105.23 0.75 0.86
7 A2 1204 1143 0.00 5.12 0.75 0.86
8 A2 1057 1003 0.00 0.14 0.75 0.86
9 B1 3240 3076 56.87 14.58 0.75 0.86
10 B1 1183 1123 2.70 15.40 0.75 0.86
11 B1 832 789 0.07 9.18 0.75 0.86
12 B2 3142 2982 37.05 9.30 0.75 0.86
13 B2 1550 1471 1.06 6.72 0.75 0.86
14 B2 1160 1101 2.20 3.85 0.75 0.86
15 B2 860 816 11.77 4.82 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 12797.8 cm-1
Scaled (by 0.9492) Zero Point Vibrational Energy (zpe) 12147.7 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
0.85062 0.73869 0.47048

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 0.858
C2 0.000 0.733 -0.374
C3 0.000 -0.733 -0.374
H4 0.919 1.272 -0.594
H5 -0.919 1.272 -0.594
H6 -0.919 -1.272 -0.594
H7 0.919 -1.272 -0.594

Atom - Atom Distances (Å)
  O1 C2 C3 H4 H5 H6 H7
O11.43301.43302.13752.13752.13752.1375
C21.43301.46621.08771.08772.21632.2163
C31.43301.46622.21632.21631.08771.0877
H42.13751.08772.21631.83793.13782.5432
H52.13751.08772.21631.83792.54323.1378
H62.13752.21631.08773.13782.54321.8379
H72.13752.21631.08772.54323.13781.8379

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 59.232 O1 C2 H4 115.303
O1 C2 H5 115.303 O1 C3 C2 59.232
O1 C3 H6 115.303 O1 C3 H7 115.303
C2 O1 C3 61.535 C2 C3 H6 119.678
C2 C3 H7 119.678 C3 C2 H4 119.678
C3 C2 H5 119.678 H4 C2 H5 115.314
H6 C3 H7 115.314
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 -0.439      
2 C -0.105      
3 C -0.105      
4 H 0.162      
5 H 0.162      
6 H 0.162      
7 H 0.162      


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 -2.028 2.028
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -17.308 0.000 0.000
y 0.000 -16.371 0.000
z 0.000 0.000 -20.428
Traceless
 xyz
x 1.091 0.000 0.000
y 0.000 2.498 0.000
z 0.000 0.000 -3.589
Polar
3z2-r2-7.177
x2-y2-0.938
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.238 0.000 0.000
y 0.000 4.145 0.000
z 0.000 0.000 2.674


<r2> (average value of r2) Å2
<r2> 36.529
(<r2>)1/2 6.044