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

using model chemistry: PBE1PBE/STO-3G

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/STO-3G
 hartrees
Energy at 0K-151.648707
Energy at 298.15K 
HF Energy-151.648707
Nuclear repulsion energy73.634387
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/STO-3G
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 3378 2980 0.09 70.09 0.10 0.18
2 A1 1681 1483 0.15 12.24 0.67 0.81
3 A1 1405 1239 2.06 16.78 0.31 0.47
4 A1 1267 1117 4.83 1.65 0.26 0.42
5 A1 1002 884 9.17 7.38 0.74 0.85
6 A2 3514 3100 0.00 50.55 0.75 0.86
7 A2 1231 1086 0.00 6.15 0.75 0.86
8 A2 1075 949 0.00 0.14 0.75 0.86
9 B1 3523 3108 2.71 8.34 0.75 0.86
10 B1 1192 1051 5.28 10.96 0.75 0.86
11 B1 876 772 0.00 3.79 0.75 0.86
12 B2 3365 2969 2.71 5.02 0.75 0.86
13 B2 1631 1439 0.03 5.46 0.75 0.86
14 B2 1213 1070 1.96 0.40 0.75 0.86
15 B2 1081 954 0.16 5.91 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 13716.7 cm-1
Scaled (by 0.8821) Zero Point Vibrational Energy (zpe) 12099.5 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/STO-3G
ABC
0.81214 0.71464 0.45033

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBE1PBE/STO-3G

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.881
C2 0.000 0.748 -0.377
C3 0.000 -0.748 -0.377
H4 0.926 1.289 -0.632
H5 -0.926 1.289 -0.632
H6 -0.926 -1.289 -0.632
H7 0.926 -1.289 -0.632

Atom - Atom Distances (Å)
  O1 C2 C3 H4 H5 H6 H7
O11.46401.46402.19242.19242.19242.1924
C21.46401.49671.10181.10182.25192.2519
C31.46401.49672.25192.25191.10181.1018
H42.19241.10182.25191.85183.17342.5770
H52.19241.10182.25191.85182.57703.1734
H62.19242.25191.10183.17342.57701.8518
H72.19242.25191.10182.57703.17341.8518

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 59.260 O1 C2 H4 116.697
O1 C2 H5 116.697 O1 C3 C2 59.260
O1 C3 H6 116.697 O1 C3 H7 116.697
C2 O1 C3 61.481 C2 C3 H6 119.358
C2 C3 H7 119.358 C3 C2 H4 119.358
C3 C2 H5 119.358 H4 C2 H5 114.356
H6 C3 H7 114.356
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBE1PBE/STO-3G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.164      
2 C -0.097      
3 C -0.097      
4 H 0.090      
5 H 0.090      
6 H 0.090      
7 H 0.090      


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 -1.279 1.279
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -16.117 0.000 0.000
y 0.000 -15.820 0.000
z 0.000 0.000 -18.648
Traceless
 xyz
x 1.117 0.000 0.000
y 0.000 1.562 0.000
z 0.000 0.000 -2.679
Polar
3z2-r2-5.358
x2-y2-0.297
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.608 0.000 0.000
y 0.000 2.422 0.000
z 0.000 0.000 1.354


<r2> (average value of r2) Å2
<r2> 36.837
(<r2>)1/2 6.069