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

using model chemistry: B3PW91/daug-cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at B3PW91/daug-cc-pVTZ
 hartrees
Energy at 0K-153.793330
Energy at 298.15K 
HF Energy-153.793330
Nuclear repulsion energy75.535432
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 B3PW91/daug-cc-pVTZ
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 3097 3097 16.85 247.58 0.06 0.11
2 A1 1536 1536 2.90 2.38 0.31 0.47
3 A1 1313 1313 16.25 30.06 0.11 0.20
4 A1 1151 1151 0.00 2.72 0.20 0.34
5 A1 912 912 70.79 7.73 0.71 0.83
6 A2 3172 3172 0.00 110.37 0.75 0.86
7 A2 1171 1171 0.00 0.78 0.75 0.86
8 A2 1049 1049 0.00 0.03 0.75 0.86
9 B1 3187 3187 39.24 22.16 0.75 0.86
10 B1 1172 1172 3.98 3.40 0.75 0.86
11 B1 817 817 0.23 2.83 0.75 0.86
12 B2 3089 3089 35.87 10.21 0.75 0.86
13 B2 1497 1497 0.25 3.50 0.75 0.86
14 B2 1162 1162 0.28 0.26 0.75 0.86
15 B2 877 877 11.16 3.20 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 12601.3 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 12601.3 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 B3PW91/daug-cc-pVTZ
ABC
0.86389 0.74424 0.47689

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/daug-cc-pVTZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.850
C2 0.000 0.730 -0.370
C3 0.000 -0.730 -0.370
H4 0.919 1.265 -0.589
H5 -0.919 1.265 -0.589
H6 -0.919 -1.265 -0.589
H7 0.919 -1.265 -0.589

Atom - Atom Distances (Å)
  O1 C2 C3 H4 H5 H6 H7
O11.42151.42152.12462.12462.12462.1246
C21.42151.46011.08591.08592.20762.2076
C31.42151.46012.20762.20761.08591.0859
H42.12461.08592.20761.83873.12762.5300
H52.12461.08592.20761.83872.53003.1276
H62.12462.20761.08593.12762.53001.8387
H72.12462.20761.08592.53003.12761.8387

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 59.097 O1 C2 H4 115.193
O1 C2 H5 115.193 O1 C3 C2 59.097
O1 C3 H6 115.193 O1 C3 H7 115.193
C2 O1 C3 61.806 C2 C3 H6 119.514
C2 C3 H7 119.514 C3 C2 H4 119.514
C3 C2 H5 119.514 H4 C2 H5 115.698
H6 C3 H7 115.698
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/daug-cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.875      
2 C -0.547      
3 C -0.547      
4 H 0.492      
5 H 0.492      
6 H 0.492      
7 H 0.492      


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 -1.847 1.847
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -17.333 0.000 0.000
y 0.000 -16.441 0.000
z 0.000 0.000 -20.830
Traceless
 xyz
x 1.302 0.000 0.000
y 0.000 2.641 0.000
z 0.000 0.000 -3.943
Polar
3z2-r2-7.885
x2-y2-0.893
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.957 0.000 0.000
y 0.000 4.826 0.000
z 0.000 0.000 3.947


<r2> (average value of r2) Å2
<r2> 36.351
(<r2>)1/2 6.029