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

using model chemistry: B3PW91/aug-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/aug-cc-pVTZ
 hartrees
Energy at 0K-153.793124
Energy at 298.15K 
HF Energy-153.793124
Nuclear repulsion energy75.534065
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/aug-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 2989 16.86 247.27 0.06 0.11
2 A1 1536 1483 2.85 2.46 0.31 0.47
3 A1 1313 1268 16.27 30.00 0.11 0.20
4 A1 1151 1111 0.00 2.63 0.22 0.36
5 A1 912 881 70.78 7.78 0.71 0.83
6 A2 3173 3062 0.00 110.60 0.75 0.86
7 A2 1171 1130 0.00 0.78 0.75 0.86
8 A2 1049 1013 0.00 0.03 0.75 0.86
9 B1 3188 3076 39.11 22.24 0.75 0.86
10 B1 1172 1131 3.97 3.44 0.75 0.86
11 B1 818 789 0.24 2.85 0.75 0.86
12 B2 3090 2982 35.86 10.18 0.75 0.86
13 B2 1497 1445 0.26 3.47 0.75 0.86
14 B2 1162 1121 0.29 0.26 0.75 0.86
15 B2 877 846 11.11 3.17 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 12603.3 cm-1
Scaled (by 0.9651) Zero Point Vibrational Energy (zpe) 12163.4 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/aug-cc-pVTZ
ABC
0.86382 0.74425 0.47687

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/aug-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
O11.42161.42162.12462.12462.12462.1246
C21.42161.46011.08591.08592.20762.2076
C31.42161.46012.20762.20761.08591.0859
H42.12461.08592.20761.83883.12762.5300
H52.12461.08592.20761.83882.53003.1276
H62.12462.20761.08593.12762.53001.8388
H72.12462.20761.08592.53003.12761.8388

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 59.099 O1 C2 H4 115.188
O1 C2 H5 115.188 O1 C3 C2 59.099
O1 C3 H6 115.188 O1 C3 H7 115.188
C2 O1 C3 61.802 C2 C3 H6 119.514
C2 C3 H7 119.514 C3 C2 H4 119.514
C3 C2 H5 119.514 H4 C2 H5 115.703
H6 C3 H7 115.703
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/aug-cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.566      
2 C -0.274      
3 C -0.274      
4 H 0.279      
5 H 0.279      
6 H 0.279      
7 H 0.279      


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 -1.849 1.849
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -17.331 0.000 0.000
y 0.000 -16.435 0.000
z 0.000 0.000 -20.843
Traceless
 xyz
x 1.308 0.000 0.000
y 0.000 2.652 0.000
z 0.000 0.000 -3.960
Polar
3z2-r2-7.920
x2-y2-0.896
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.940 0.000 0.000
y 0.000 4.816 0.000
z 0.000 0.000 3.941


<r2> (average value of r2) Å2
<r2> 36.352
(<r2>)1/2 6.029