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

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

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at B1B95/6-31+G**
 hartrees
Energy at 0K-153.732891
Energy at 298.15K 
HF Energy-153.732891
Nuclear repulsion energy75.582265
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 B1B95/6-31+G**
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 3136 3000 14.19 215.17 0.10 0.17
2 A1 1557 1489 5.34 3.12 0.37 0.54
3 A1 1333 1275 15.43 31.01 0.14 0.25
4 A1 1167 1116 0.06 1.10 0.22 0.36
5 A1 931 890 76.85 11.39 0.72 0.84
6 A2 3217 3078 0.00 115.12 0.75 0.86
7 A2 1176 1125 0.00 2.70 0.75 0.86
8 A2 1050 1005 0.00 0.26 0.75 0.86
9 B1 3231 3091 43.91 22.95 0.75 0.86
10 B1 1178 1127 3.93 6.59 0.75 0.86
11 B1 820 785 0.16 4.67 0.75 0.86
12 B2 3128 2992 34.67 10.97 0.75 0.86
13 B2 1509 1444 0.01 6.57 0.75 0.86
14 B2 1159 1109 1.11 1.63 0.75 0.86
15 B2 907 868 11.59 4.78 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 12749.3 cm-1
Scaled (by 0.9566) Zero Point Vibrational Energy (zpe) 12196.0 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 B1B95/6-31+G**
ABC
0.86862 0.74220 0.47759

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.847
C2 0.000 0.731 -0.369
C3 0.000 -0.731 -0.369
H4 0.920 1.267 -0.586
H5 -0.920 1.267 -0.586
H6 -0.920 -1.267 -0.586
H7 0.920 -1.267 -0.586

Atom - Atom Distances (Å)
  O1 C2 C3 H4 H5 H6 H7
O11.41861.41862.12232.12232.12232.1223
C21.41861.46231.08651.08652.21042.2104
C31.41861.46232.21042.21041.08651.0865
H42.12231.08652.21041.83993.13162.5341
H52.12231.08652.21041.83992.53413.1316
H62.12232.21041.08653.13162.53411.8399
H72.12232.21041.08652.53413.13161.8399

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 58.977 O1 C2 H4 115.169
O1 C2 H5 115.169 O1 C3 C2 58.977
O1 C3 H6 115.169 O1 C3 H7 115.169
C2 O1 C3 62.047 C2 C3 H6 119.552
C2 C3 H7 119.552 C3 C2 H4 119.552
C3 C2 H5 119.552 H4 C2 H5 115.706
H6 C3 H7 115.706
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.329      
2 C -0.140      
3 C -0.140      
4 H 0.153      
5 H 0.153      
6 H 0.153      
7 H 0.153      


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 -2.086 2.086
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -17.376 0.000 0.000
y 0.000 -16.370 0.000
z 0.000 0.000 -20.992
Traceless
 xyz
x 1.305 0.000 0.000
y 0.000 2.814 0.000
z 0.000 0.000 -4.119
Polar
3z2-r2-8.239
x2-y2-1.006
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.563 0.000 0.000
y 0.000 4.472 0.000
z 0.000 0.000 3.294


<r2> (average value of r2) Å2
<r2> 36.360
(<r2>)1/2 6.030