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

using model chemistry: wB97X-D/CEP-121G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at wB97X-D/CEP-121G*
 hartrees
Energy at 0K-29.642814
Energy at 298.15K 
HF Energy-29.642814
Nuclear repulsion energy42.305906
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 wB97X-D/CEP-121G*
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 3107 3107 17.64 231.79 0.10 0.18
2 A1 1562 1562 4.73 1.95 0.46 0.63
3 A1 1319 1319 13.83 33.06 0.16 0.27
4 A1 1171 1171 1.02 1.16 0.41 0.58
5 A1 917 917 76.86 14.02 0.74 0.85
6 A2 3185 3185 0.00 122.98 0.75 0.86
7 A2 1177 1177 0.00 2.76 0.75 0.86
8 A2 1054 1054 0.00 0.13 0.75 0.86
9 B1 3200 3200 80.52 18.83 0.75 0.86
10 B1 1180 1180 3.98 11.40 0.75 0.86
11 B1 820 820 0.05 6.61 0.75 0.86
12 B2 3098 3098 63.72 11.95 0.75 0.86
13 B2 1515 1515 0.43 6.96 0.75 0.86
14 B2 1145 1145 2.64 3.30 0.75 0.86
15 B2 902 902 12.24 4.82 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 wB97X-D/CEP-121G*
ABC
0.85537 0.72978 0.46916

See section I.F.4 to change rotational constant units
Geometric Data calculated at wB97X-D/CEP-121G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.854
C2 0.000 0.739 -0.373
C3 0.000 -0.739 -0.373
H4 0.924 1.277 -0.590
H5 -0.924 1.277 -0.590
H6 -0.924 -1.277 -0.590
H7 0.924 -1.277 -0.590

Atom - Atom Distances (Å)
  O1 C2 C3 H4 H5 H6 H7
O11.43171.43172.13682.13682.13682.1368
C21.43171.47721.09061.09062.22732.2273
C31.43171.47722.22732.22731.09061.0906
H42.13681.09062.22731.84703.15122.5531
H52.13681.09062.22731.84702.55313.1512
H62.13682.22731.09063.15122.55311.8470
H72.13682.22731.09062.55313.15121.8470

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 58.943 O1 C2 H4 115.145
O1 C2 H5 115.145 O1 C3 C2 58.943
O1 C3 H6 115.145 O1 C3 H7 115.145
C2 O1 C3 62.114 C2 C3 H6 119.558
C2 C3 H7 119.558 C3 C2 H4 119.558
C3 C2 H5 119.558 H4 C2 H5 115.731
H6 C3 H7 115.731
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at wB97X-D/CEP-121G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.293      
2 C -0.194      
3 C -0.194      
4 H 0.170      
5 H 0.170      
6 H 0.170      
7 H 0.170      


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 -2.043 2.043
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -17.057 0.000 0.000
y 0.000 -16.139 0.000
z 0.000 0.000 -20.615
Traceless
 xyz
x 1.320 0.000 0.000
y 0.000 2.697 0.000
z 0.000 0.000 -4.017
Polar
3z2-r2-8.034
x2-y2-0.918
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.494 0.000 0.000
y 0.000 4.544 0.000
z 0.000 0.000 3.063


<r2> (average value of r2) Å2
<r2> 32.372
(<r2>)1/2 5.690