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

using model chemistry: PBEPBEultrafine/6-311+G(3df,2p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at PBEPBEultrafine/6-311+G(3df,2p)
 hartrees
Energy at 0K-153.660617
Energy at 298.15K 
HF Energy-153.660617
Nuclear repulsion energy74.925584
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 PBEPBEultrafine/6-311+G(3df,2p)
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 3014 3014 18.24 238.99 0.07 0.13
2 A1 1484 1484 2.71 3.03 0.35 0.52
3 A1 1273 1273 14.61 28.74 0.12 0.22
4 A1 1104 1104 0.22 2.46 0.21 0.35
5 A1 882 882 65.43 8.19 0.72 0.84
6 A2 3087 3087 0.00 121.81 0.75 0.86
7 A2 1134 1134 0.00 1.39 0.75 0.86
8 A2 1012 1012 0.00 0.04 0.75 0.86
9 B1 3102 3102 44.47 27.02 0.75 0.86
10 B1 1133 1133 2.61 4.11 0.75 0.86
11 B1 792 792 0.13 3.56 0.75 0.86
12 B2 3008 3008 37.39 11.63 0.75 0.86
13 B2 1451 1451 0.14 3.86 0.75 0.86
14 B2 1115 1115 0.48 0.35 0.75 0.86
15 B2 834 834 10.85 2.70 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 12211.0 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 12211.0 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 PBEPBEultrafine/6-311+G(3df,2p)
ABC
0.84707 0.73472 0.46920

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBEPBEultrafine/6-311+G(3df,2p)

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.858
C2 0.000 0.734 -0.374
C3 0.000 -0.734 -0.374
H4 0.926 1.274 -0.594
H5 -0.926 1.274 -0.594
H6 -0.926 -1.274 -0.594
H7 0.926 -1.274 -0.594

Atom - Atom Distances (Å)
  O1 C2 C3 H4 H5 H6 H7
O11.43481.43482.14242.14242.14242.1424
C21.43481.46891.09411.09412.22232.2223
C31.43481.46892.22232.22231.09411.0941
H42.14241.09412.22231.85253.14962.5472
H52.14241.09412.22231.85252.54723.1496
H62.14242.22231.09413.14962.54721.8525
H72.14242.22231.09412.54723.14961.8525

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 59.209 O1 C2 H4 115.151
O1 C2 H5 115.151 O1 C3 C2 59.209
O1 C3 H6 115.151 O1 C3 H7 115.151
C2 O1 C3 61.581 C2 C3 H6 119.523
C2 C3 H7 119.523 C3 C2 H4 119.523
C3 C2 H5 119.523 H4 C2 H5 115.689
H6 C3 H7 115.689
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBEultrafine/6-311+G(3df,2p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.511      
2 C 0.028      
3 C 0.028      
4 H 0.114      
5 H 0.114      
6 H 0.114      
7 H 0.114      


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 -1.800 1.800
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -17.631 0.000 0.000
y 0.000 -16.699 0.000
z 0.000 0.000 -21.053
Traceless
 xyz
x 1.245 0.000 0.000
y 0.000 2.644 0.000
z 0.000 0.000 -3.889
Polar
3z2-r2-7.777
x2-y2-0.932
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.036 0.000 0.000
y 0.000 4.915 0.000
z 0.000 0.000 4.016


<r2> (average value of r2) Å2
<r2> 36.910
(<r2>)1/2 6.075