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

using model chemistry: B1B95/6-31G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at B1B95/6-31G**
 hartrees
Energy at 0K-153.720500
Energy at 298.15K 
HF Energy-153.720500
Nuclear repulsion energy75.651405
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 B1B95/6-31G**
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 3141 2999 11.99 193.46 0.10 0.18
2 A1 1580 1509 4.73 3.13 0.70 0.82
3 A1 1342 1281 13.42 24.30 0.18 0.30
4 A1 1178 1125 0.26 1.30 0.53 0.69
5 A1 940 898 59.80 11.81 0.74 0.85
6 A2 3216 3071 0.00 107.48 0.75 0.86
7 A2 1188 1135 0.00 4.95 0.75 0.86
8 A2 1055 1007 0.00 0.23 0.75 0.86
9 B1 3231 3085 57.69 14.86 0.75 0.86
10 B1 1187 1133 3.01 15.33 0.75 0.86
11 B1 825 788 0.05 8.85 0.75 0.86
12 B2 3132 2990 38.51 9.63 0.75 0.86
13 B2 1531 1462 0.67 6.89 0.75 0.86
14 B2 1152 1100 1.76 3.70 0.75 0.86
15 B2 918 877 13.40 4.27 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 12807.9 cm-1
Scaled (by 0.9548) Zero Point Vibrational Energy (zpe) 12229.0 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 B1B95/6-31G**
ABC
0.87138 0.74273 0.47849

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/6-31G**

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.845
C2 0.000 0.731 -0.367
C3 0.000 -0.731 -0.367
H4 0.919 1.268 -0.589
H5 -0.919 1.268 -0.589
H6 -0.919 -1.268 -0.589
H7 0.919 -1.268 -0.589

Atom - Atom Distances (Å)
  O1 C2 C3 H4 H5 H6 H7
O11.41551.41552.12392.12392.12392.1239
C21.41551.46121.08761.08762.21092.2109
C31.41551.46122.21092.21091.08761.0876
H42.12391.08762.21091.83833.13212.5359
H52.12391.08762.21091.83832.53593.1321
H62.12392.21091.08763.13212.53591.8383
H72.12392.21091.08762.53593.13211.8383

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 58.927 O1 C2 H4 115.470
O1 C2 H5 115.470 O1 C3 C2 58.927
O1 C3 H6 115.470 O1 C3 H7 115.470
C2 O1 C3 62.145 C2 C3 H6 119.607
C2 C3 H7 119.607 C3 C2 H4 119.607
C3 C2 H5 119.607 H4 C2 H5 115.360
H6 C3 H7 115.360
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/6-31G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.427      
2 C -0.127      
3 C -0.127      
4 H 0.170      
5 H 0.170      
6 H 0.170      
7 H 0.170      


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 -1.941 1.941
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -17.075 0.000 0.000
y 0.000 -16.198 0.000
z 0.000 0.000 -20.242
Traceless
 xyz
x 1.145 0.000 0.000
y 0.000 2.461 0.000
z 0.000 0.000 -3.606
Polar
3z2-r2-7.212
x2-y2-0.878
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.261 0.000 0.000
y 0.000 4.158 0.000
z 0.000 0.000 2.632


<r2> (average value of r2) Å2
<r2> 36.079
(<r2>)1/2 6.007