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

using model chemistry: TPSSh/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 TPSSh/6-31G
 hartrees
Energy at 0K-153.741666
Energy at 298.15K 
HF Energy-153.741666
Nuclear repulsion energy73.362573
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 TPSSh/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 3150 3031 5.51 211.69 0.09 0.17
2 A1 1564 1505 0.60 6.11 0.72 0.84
3 A1 1272 1223 6.72 22.44 0.13 0.23
4 A1 1140 1097 5.03 6.23 0.39 0.56
5 A1 842 810 45.09 11.93 0.70 0.82
6 A2 3232 3110 0.00 115.62 0.75 0.86
7 A2 1207 1161 0.00 5.82 0.75 0.86
8 A2 1009 971 0.00 0.01 0.75 0.86
9 B1 3251 3128 54.53 15.00 0.75 0.86
10 B1 1118 1075 1.25 18.79 0.75 0.86
11 B1 832 801 0.03 10.71 0.75 0.86
12 B2 3140 3021 27.75 9.88 0.75 0.86
13 B2 1545 1487 0.01 6.09 0.75 0.86
14 B2 1152 1108 9.64 4.29 0.75 0.86
15 B2 766 736 6.35 7.83 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 12609.8 cm-1
Scaled (by 0.9621) Zero Point Vibrational Energy (zpe) 12131.9 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 TPSSh/6-31G
ABC
0.78252 0.72913 0.44526

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.901
C2 0.000 0.740 -0.397
C3 0.000 -0.740 -0.397
H4 0.919 1.277 -0.610
H5 -0.919 1.277 -0.610
H6 -0.919 -1.277 -0.610
H7 0.919 -1.277 -0.610

Atom - Atom Distances (Å)
  O1 C2 C3 H4 H5 H6 H7
O11.49441.49442.18142.18142.18142.1814
C21.49441.48011.08521.08522.22662.2266
C31.49441.48012.22662.22661.08521.0852
H42.18141.08522.22661.83713.14632.5542
H52.18141.08522.22661.83712.55423.1463
H62.18142.22661.08523.14632.55421.8371
H72.18142.22661.08522.55423.14631.8371

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 60.316 O1 C2 H4 114.556
O1 C2 H5 114.556 O1 C3 C2 60.316
O1 C3 H6 114.556 O1 C3 H7 114.556
C2 O1 C3 59.368 C2 C3 H6 119.664
C2 C3 H7 119.664 C3 C2 H4 119.664
C3 C2 H5 119.664 H4 C2 H5 115.664
H6 C3 H7 115.664
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at TPSSh/6-31G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.468      
2 C -0.120      
3 C -0.120      
4 H 0.177      
5 H 0.177      
6 H 0.177      
7 H 0.177      


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 -2.504 2.504
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.093 0.000 0.000
y 0.000 4.220 0.000
z 0.000 0.000 2.856


<r2> (average value of r2) Å2
<r2> 37.655
(<r2>)1/2 6.136