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

using model chemistry: B3PW91/6-31G(2df,p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at B3PW91/6-31G(2df,p)
 hartrees
Energy at 0K-153.744210
Energy at 298.15K 
HF Energy-153.744210
Nuclear repulsion energy75.495946
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 B3PW91/6-31G(2df,p)
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 3099 2979 13.03 190.06 0.09 0.17
2 A1 1542 1483 3.14 3.06 0.69 0.82
3 A1 1322 1271 13.26 23.38 0.16 0.27
4 A1 1157 1113 0.06 1.95 0.36 0.53
5 A1 923 887 55.17 10.05 0.73 0.85
6 A2 3175 3052 0.00 104.02 0.75 0.86
7 A2 1170 1125 0.00 3.61 0.75 0.86
8 A2 1047 1007 0.00 0.20 0.75 0.86
9 B1 3191 3068 49.44 14.66 0.75 0.86
10 B1 1174 1129 3.26 11.89 0.75 0.86
11 B1 815 783 0.01 6.85 0.75 0.86
12 B2 3090 2970 38.99 9.75 0.75 0.86
13 B2 1500 1442 0.13 6.04 0.75 0.86
14 B2 1151 1106 0.70 2.37 0.75 0.86
15 B2 890 856 11.74 3.51 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 12622.8 cm-1
Scaled (by 0.9614) Zero Point Vibrational Energy (zpe) 12135.5 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 B3PW91/6-31G(2df,p)
ABC
0.86672 0.74053 0.47646

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/6-31G(2df,p)

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.848
C2 0.000 0.732 -0.368
C3 0.000 -0.732 -0.368
H4 0.921 1.269 -0.592
H5 -0.921 1.269 -0.592
H6 -0.921 -1.269 -0.592
H7 0.921 -1.269 -0.592

Atom - Atom Distances (Å)
  O1 C2 C3 H4 H5 H6 H7
O11.41891.41892.12912.12912.12912.1291
C21.41891.46361.08951.08952.21422.2142
C31.41891.46362.21422.21421.08951.0895
H42.12911.08952.21421.84123.13612.5387
H52.12911.08952.21421.84122.53873.1361
H62.12912.21421.08953.13612.53871.8412
H72.12912.21421.08952.53873.13611.8412

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 58.952 O1 C2 H4 115.542
O1 C2 H5 115.542 O1 C3 C2 58.952
O1 C3 H6 115.542 O1 C3 H7 115.542
C2 O1 C3 62.096 C2 C3 H6 119.564
C2 C3 H7 119.564 C3 C2 H4 119.564
C3 C2 H5 119.564 H4 C2 H5 115.344
H6 C3 H7 115.344
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.227      
2 C -0.166      
3 C -0.166      
4 H 0.140      
5 H 0.140      
6 H 0.140      
7 H 0.140      


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 -1.754 1.754
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -16.996 0.000 0.000
y 0.000 -16.267 0.000
z 0.000 0.000 -20.129
Traceless
 xyz
x 1.202 0.000 0.000
y 0.000 2.295 0.000
z 0.000 0.000 -3.498
Polar
3z2-r2-6.996
x2-y2-0.729
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.460 0.000 0.000
y 0.000 4.317 0.000
z 0.000 0.000 2.913


<r2> (average value of r2) Å2
<r2> 36.155
(<r2>)1/2 6.013