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

using model chemistry: mPW1PW91/6-31+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 mPW1PW91/6-31+G**
 hartrees
Energy at 0K-153.760751
Energy at 298.15K 
HF Energy-153.760751
Nuclear repulsion energy75.450381
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 mPW1PW91/6-31+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 3137 2985 13.98 215.04 0.09 0.17
2 A1 1558 1483 4.79 2.94 0.40 0.57
3 A1 1330 1265 15.39 30.95 0.14 0.25
4 A1 1168 1111 0.00 1.25 0.20 0.34
5 A1 924 880 79.17 11.33 0.73 0.84
6 A2 3218 3063 0.00 114.84 0.75 0.86
7 A2 1181 1124 0.00 2.57 0.75 0.86
8 A2 1052 1001 0.00 0.24 0.75 0.86
9 B1 3231 3076 42.48 23.08 0.75 0.86
10 B1 1180 1123 3.73 6.36 0.75 0.86
11 B1 824 784 0.21 4.61 0.75 0.86
12 B2 3129 2978 34.62 11.06 0.75 0.86
13 B2 1514 1441 0.00 6.50 0.75 0.86
14 B2 1163 1107 1.42 1.49 0.75 0.86
15 B2 895 852 11.34 5.01 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 12750.7 cm-1
Scaled (by 0.9518) Zero Point Vibrational Energy (zpe) 12136.1 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 mPW1PW91/6-31+G**
ABC
0.86453 0.74050 0.47582

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/6-31+G**

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.849
C2 0.000 0.732 -0.370
C3 0.000 -0.732 -0.370
H4 0.921 1.269 -0.587
H5 -0.921 1.269 -0.587
H6 -0.921 -1.269 -0.587
H7 0.921 -1.269 -0.587

Atom - Atom Distances (Å)
  O1 C2 C3 H4 H5 H6 H7
O11.42201.42202.12582.12582.12582.1258
C21.42201.46391.08771.08772.21312.2131
C31.42201.46392.21312.21311.08771.0877
H42.12581.08772.21311.84163.13542.5375
H52.12581.08772.21311.84162.53753.1354
H62.12582.21311.08773.13542.53751.8416
H72.12582.21311.08772.53753.13541.8416

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 59.020 O1 C2 H4 115.143
O1 C2 H5 115.143 O1 C3 C2 59.020
O1 C3 H6 115.143 O1 C3 H7 115.143
C2 O1 C3 61.961 C2 C3 H6 119.575
C2 C3 H7 119.575 C3 C2 H4 119.575
C3 C2 H5 119.575 H4 C2 H5 115.684
H6 C3 H7 115.684
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.316      
2 C -0.165      
3 C -0.165      
4 H 0.161      
5 H 0.161      
6 H 0.161      
7 H 0.161      


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 -2.106 2.106
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -17.361 0.000 0.000
y 0.000 -16.333 0.000
z 0.000 0.000 -21.026
Traceless
 xyz
x 1.319 0.000 0.000
y 0.000 2.860 0.000
z 0.000 0.000 -4.179
Polar
3z2-r2-8.358
x2-y2-1.028
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.553 0.000 0.000
y 0.000 4.469 0.000
z 0.000 0.000 3.313


<r2> (average value of r2) Å2
<r2> 36.439
(<r2>)1/2 6.036