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

using model chemistry: PBE1PBE/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 PBE1PBE/6-31G*
 hartrees
Energy at 0K-153.610668
Energy at 298.15K 
HF Energy-153.610668
Nuclear repulsion energy75.522147
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 PBE1PBE/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 3136 2980 11.78 194.08 0.10 0.17
2 A1 1578 1500 4.41 3.04 0.71 0.83
3 A1 1341 1274 13.40 24.10 0.17 0.30
4 A1 1177 1118 0.12 1.30 0.54 0.70
5 A1 938 892 61.41 11.76 0.74 0.85
6 A2 3210 3050 0.00 107.21 0.75 0.86
7 A2 1190 1131 0.00 4.82 0.75 0.86
8 A2 1054 1002 0.00 0.22 0.75 0.86
9 B1 3225 3065 55.99 15.00 0.75 0.86
10 B1 1186 1127 2.73 15.22 0.75 0.86
11 B1 826 784 0.05 9.00 0.75 0.86
12 B2 3126 2971 37.70 9.70 0.75 0.86
13 B2 1529 1453 0.49 6.89 0.75 0.86
14 B2 1151 1094 2.25 3.57 0.75 0.86
15 B2 913 867 13.50 4.31 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 12789.6 cm-1
Scaled (by 0.9503) Zero Point Vibrational Energy (zpe) 12153.9 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 PBE1PBE/6-31G*
ABC
0.86789 0.74063 0.47697

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBE1PBE/6-31G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.847
C2 0.000 0.731 -0.368
C3 0.000 -0.731 -0.368
H4 0.921 1.270 -0.591
H5 -0.921 1.270 -0.591
H6 -0.921 -1.270 -0.591
H7 0.921 -1.270 -0.591

Atom - Atom Distances (Å)
  O1 C2 C3 H4 H5 H6 H7
O11.41791.41792.12812.12812.12812.1281
C21.41791.46271.09021.09022.21452.2145
C31.41791.46272.21452.21451.09021.0902
H42.12811.09022.21451.84243.13792.5401
H52.12811.09022.21451.84242.54013.1379
H62.12812.21451.09023.13792.54011.8424
H72.12812.21451.09022.54013.13791.8424

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 58.948 O1 C2 H4 115.475
O1 C2 H5 115.475 O1 C3 C2 58.948
O1 C3 H6 115.475 O1 C3 H7 115.475
C2 O1 C3 62.103 C2 C3 H6 119.612
C2 C3 H7 119.612 C3 C2 H4 119.612
C3 C2 H5 119.612 H4 C2 H5 115.340
H6 C3 H7 115.340
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBE1PBE/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.422      
2 C -0.148      
3 C -0.148      
4 H 0.179      
5 H 0.179      
6 H 0.179      
7 H 0.179      


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 -1.938 1.938
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -17.105 0.000 0.000
y 0.000 -16.231 0.000
z 0.000 0.000 -20.310
Traceless
 xyz
x 1.166 0.000 0.000
y 0.000 2.476 0.000
z 0.000 0.000 -3.642
Polar
3z2-r2-7.284
x2-y2-0.874
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.268 0.000 0.000
y 0.000 4.165 0.000
z 0.000 0.000 2.647


<r2> (average value of r2) Å2
<r2> 36.192
(<r2>)1/2 6.016