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

using model chemistry: B2PLYP/Def2TZVPP

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at B2PLYP/Def2TZVPP
 hartrees
Energy at 0K-153.728216
Energy at 298.15K 
HF Energy-153.540889
Nuclear repulsion energy75.323508
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 B2PLYP/Def2TZVPP
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 3128 3128 13.73 232.55 0.08 0.14
2 A1 1552 1552 2.27 1.91 0.60 0.75
3 A1 1305 1305 12.21 28.70 0.12 0.22
4 A1 1156 1156 0.00 2.53 0.22 0.36
5 A1 893 893 67.50 9.65 0.75 0.85
6 A2 3207 3207 0.00 108.57 0.75 0.86
7 A2 1185 1185 0.00 1.41 0.75 0.86
8 A2 1055 1055 0.00 0.03 0.75 0.86
9 B1 3222 3222 39.88 18.13 0.75 0.86
10 B1 1176 1176 3.44 7.02 0.75 0.86
11 B1 824 824 0.04 4.68 0.75 0.86
12 B2 3120 3120 35.91 10.49 0.75 0.86
13 B2 1519 1519 0.00 4.80 0.75 0.86
14 B2 1167 1167 1.48 1.51 0.75 0.86
15 B2 842 842 10.83 3.67 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 12675.7 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 12675.7 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 B2PLYP/Def2TZVPP
ABC
0.85385 0.74422 0.47339

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP/Def2TZVPP

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.856
C2 0.000 0.731 -0.374
C3 0.000 -0.731 -0.374
H4 0.917 1.263 -0.590
H5 -0.917 1.263 -0.590
H6 -0.917 -1.263 -0.590
H7 0.917 -1.263 -0.590

Atom - Atom Distances (Å)
  O1 C2 C3 H4 H5 H6 H7
O11.43061.43062.12792.12792.12792.1279
C21.43061.46201.08241.08242.20582.2058
C31.43061.46202.20582.20581.08241.0824
H42.12791.08242.20581.83463.12252.5267
H52.12791.08242.20581.83462.52673.1225
H62.12792.20581.08243.12252.52671.8346
H72.12792.20581.08242.52673.12251.8346

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 59.272 O1 C2 H4 115.019
O1 C2 H5 115.019 O1 C3 C2 59.272
O1 C3 H6 115.019 O1 C3 H7 115.019
C2 O1 C3 61.456 C2 C3 H6 119.463
C2 C3 H7 119.463 C3 C2 H4 119.463
C3 C2 H5 119.463 H4 C2 H5 115.878
H6 C3 H7 115.878
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B2PLYP/Def2TZVPP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.350      
2 C 0.001      
3 C 0.001      
4 H 0.087      
5 H 0.087      
6 H 0.087      
7 H 0.087      


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 -1.940 1.940
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -17.518 0.000 0.000
y 0.000 -16.616 0.000
z 0.000 0.000 -20.891
Traceless
 xyz
x 1.236 0.000 0.000
y 0.000 2.588 0.000
z 0.000 0.000 -3.824
Polar
3z2-r2-7.649
x2-y2-0.902
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.681 0.000 0.000
y 0.000 4.671 0.000
z 0.000 0.000 3.542


<r2> (average value of r2) Å2
<r2> 36.546
(<r2>)1/2 6.045