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

using model chemistry: mPW1PW91/aug-cc-pVTZ

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/aug-cc-pVTZ
 hartrees
Energy at 0K-153.810886
Energy at 298.15K 
HF Energy-153.810886
Nuclear repulsion energy75.697509
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/aug-cc-pVTZ
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 3116 2986 16.34 242.85 0.06 0.12
2 A1 1546 1481 3.00 2.59 0.25 0.40
3 A1 1325 1269 16.72 30.19 0.11 0.20
4 A1 1161 1112 0.02 2.52 0.24 0.39
5 A1 923 884 72.06 7.76 0.70 0.83
6 A2 3192 3059 0.00 107.64 0.75 0.86
7 A2 1177 1128 0.00 0.77 0.75 0.86
8 A2 1057 1013 0.00 0.03 0.75 0.86
9 B1 3208 3073 37.37 21.27 0.75 0.86
10 B1 1180 1131 4.20 3.38 0.75 0.86
11 B1 821 787 0.25 2.72 0.75 0.86
12 B2 3108 2978 34.65 9.75 0.75 0.86
13 B2 1505 1442 0.32 3.37 0.75 0.86
14 B2 1170 1121 0.27 0.25 0.75 0.86
15 B2 892 854 11.06 3.32 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 12690.6 cm-1
Scaled (by 0.9581) Zero Point Vibrational Energy (zpe) 12158.9 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/aug-cc-pVTZ
ABC
0.86874 0.74647 0.47908

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/aug-cc-pVTZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.847
C2 0.000 0.729 -0.369
C3 0.000 -0.729 -0.369
H4 0.918 1.263 -0.587
H5 -0.918 1.263 -0.587
H6 -0.918 -1.263 -0.587
H7 0.918 -1.263 -0.587

Atom - Atom Distances (Å)
  O1 C2 C3 H4 H5 H6 H7
O11.41761.41762.12002.12002.12002.1200
C21.41761.45801.08451.08452.20422.2042
C31.41761.45802.20422.20421.08451.0845
H42.12001.08452.20421.83673.12302.5257
H52.12001.08452.20421.83672.52573.1230
H62.12002.20421.08453.12302.52571.8367
H72.12002.20421.08452.52573.12301.8367

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 59.053 O1 C2 H4 115.196
O1 C2 H5 115.196 O1 C3 C2 59.053
O1 C3 H6 115.196 O1 C3 H7 115.196
C2 O1 C3 61.893 C2 C3 H6 119.492
C2 C3 H7 119.492 C3 C2 H4 119.492
C3 C2 H5 119.492 H4 C2 H5 115.742
H6 C3 H7 115.742
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/aug-cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.568      
2 C -0.235      
3 C -0.235      
4 H 0.259      
5 H 0.259      
6 H 0.259      
7 H 0.259      


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 -1.851 1.851
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -17.314 0.000 0.000
y 0.000 -16.424 0.000
z 0.000 0.000 -20.843
Traceless
 xyz
x 1.319 0.000 0.000
y 0.000 2.655 0.000
z 0.000 0.000 -3.974
Polar
3z2-r2-7.948
x2-y2-0.891
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.908 0.000 0.000
y 0.000 4.782 0.000
z 0.000 0.000 3.904


<r2> (average value of r2) Å2
<r2> 36.243
(<r2>)1/2 6.020