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

using model chemistry: HSEh1PBE/6-31+G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at HSEh1PBE/6-31+G**
 hartrees
Energy at 0K-153.636022
Energy at 298.15K 
HF Energy-153.636022
Nuclear repulsion energy75.438679
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 HSEh1PBE/6-31+G**
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 3129 2987 14.22 216.22 0.09 0.17
2 A1 1553 1483 5.04 3.07 0.39 0.57
3 A1 1329 1269 15.22 30.94 0.14 0.25
4 A1 1164 1111 0.01 1.23 0.20 0.34
5 A1 927 885 79.10 11.34 0.73 0.84
6 A2 3210 3065 0.00 115.36 0.75 0.86
7 A2 1177 1124 0.00 2.61 0.75 0.86
8 A2 1049 1002 0.00 0.25 0.75 0.86
9 B1 3224 3078 43.03 23.58 0.75 0.86
10 B1 1177 1124 3.64 6.43 0.75 0.86
11 B1 821 784 0.17 4.75 0.75 0.86
12 B2 3121 2980 34.37 11.16 0.75 0.86
13 B2 1508 1440 0.00 6.61 0.75 0.86
14 B2 1159 1106 1.43 1.56 0.75 0.86
15 B2 897 856 11.75 4.78 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 12721.3 cm-1
Scaled (by 0.9548) Zero Point Vibrational Energy (zpe) 12146.3 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 HSEh1PBE/6-31+G**
ABC
0.86423 0.74031 0.47587

See section I.F.4 to change rotational constant units
Geometric Data calculated at HSEh1PBE/6-31+G**

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.849
C2 0.000 0.732 -0.370
C3 0.000 -0.732 -0.370
H4 0.922 1.269 -0.588
H5 -0.922 1.269 -0.588
H6 -0.922 -1.269 -0.588
H7 0.922 -1.269 -0.588

Atom - Atom Distances (Å)
  O1 C2 C3 H4 H5 H6 H7
O11.42171.42172.12692.12692.12692.1269
C21.42171.46351.08901.08902.21382.2138
C31.42171.46352.21382.21381.08901.0890
H42.12691.08902.21381.84383.13732.5383
H52.12691.08902.21381.84382.53833.1373
H62.12692.21381.08903.13732.53831.8438
H72.12692.21381.08902.53833.13731.8438

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 59.021 O1 C2 H4 115.163
O1 C2 H5 115.163 O1 C3 C2 59.021
O1 C3 H6 115.163 O1 C3 H7 115.163
C2 O1 C3 61.957 C2 C3 H6 119.568
C2 C3 H7 119.568 C3 C2 H4 119.568
C3 C2 H5 119.568 H4 C2 H5 115.674
H6 C3 H7 115.674
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HSEh1PBE/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.321      
2 C -0.158      
3 C -0.158      
4 H 0.159      
5 H 0.159      
6 H 0.159      
7 H 0.159      


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 -2.086 2.086
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -17.418 0.000 0.000
y 0.000 -16.409 0.000
z 0.000 0.000 -21.065
Traceless
 xyz
x 1.319 0.000 0.000
y 0.000 2.833 0.000
z 0.000 0.000 -4.151
Polar
3z2-r2-8.302
x2-y2-1.009
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.580 0.000 0.000
y 0.000 4.484 0.000
z 0.000 0.000 3.323


<r2> (average value of r2) Å2
<r2> 36.485
(<r2>)1/2 6.040