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

using model chemistry: mPW1PW91/6-311+G(3df,2p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at mPW1PW91/6-311+G(3df,2p)
 hartrees
Energy at 0K-153.806500
Energy at 298.15K 
HF Energy-153.806500
Nuclear repulsion energy75.768446
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 mPW1PW91/6-311+G(3df,2p)
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 3114 3114 16.01 219.12 0.07 0.13
2 A1 1548 1548 3.03 3.10 0.21 0.34
3 A1 1329 1329 17.02 29.16 0.12 0.21
4 A1 1164 1164 0.00 2.45 0.24 0.39
5 A1 925 925 72.34 8.00 0.70 0.82
6 A2 3190 3190 0.00 106.51 0.75 0.86
7 A2 1177 1177 0.00 1.22 0.75 0.86
8 A2 1059 1059 0.00 0.04 0.75 0.86
9 B1 3205 3205 38.03 20.15 0.75 0.86
10 B1 1185 1185 4.21 3.75 0.75 0.86
11 B1 821 821 0.28 2.62 0.75 0.86
12 B2 3105 3105 34.31 9.42 0.75 0.86
13 B2 1506 1506 0.34 3.33 0.75 0.86
14 B2 1171 1171 0.28 0.25 0.75 0.86
15 B2 897 897 10.56 3.68 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 12698.1 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 12698.1 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 mPW1PW91/6-311+G(3df,2p)
ABC
0.87220 0.74645 0.48006

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/6-311+G(3df,2p)

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.845
C2 0.000 0.729 -0.368
C3 0.000 -0.729 -0.368
H4 0.918 1.264 -0.586
H5 -0.918 1.264 -0.586
H6 -0.918 -1.264 -0.586
H7 0.918 -1.264 -0.586

Atom - Atom Distances (Å)
  O1 C2 C3 H4 H5 H6 H7
O11.41511.41512.11822.11822.11822.1182
C21.41511.45771.08461.08462.20462.2046
C31.41511.45772.20462.20461.08461.0846
H42.11821.08462.20461.83623.12392.5273
H52.11821.08462.20461.83622.52733.1239
H62.11822.20461.08463.12392.52731.8362
H72.11822.20461.08462.52733.12391.8362

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 58.998 O1 C2 H4 115.222
O1 C2 H5 115.222 O1 C3 C2 58.998
O1 C3 H6 115.222 O1 C3 H7 115.222
C2 O1 C3 62.003 C2 C3 H6 119.544
C2 C3 H7 119.544 C3 C2 H4 119.544
C3 C2 H5 119.544 H4 C2 H5 115.661
H6 C3 H7 115.661
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/6-311+G(3df,2p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.552      
2 C 0.057      
3 C 0.057      
4 H 0.110      
5 H 0.110      
6 H 0.110      
7 H 0.110      


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 -1.874 1.874
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -17.323 0.000 0.000
y 0.000 -16.355 0.000
z 0.000 0.000 -20.861
Traceless
 xyz
x 1.285 0.000 0.000
y 0.000 2.737 0.000
z 0.000 0.000 -4.022
Polar
3z2-r2-8.044
x2-y2-0.968
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.806 0.000 0.000
y 0.000 4.677 0.000
z 0.000 0.000 3.781


<r2> (average value of r2) Å2
<r2> 36.197
(<r2>)1/2 6.016