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

using model chemistry: HSEh1PBE/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 HSEh1PBE/6-311+G(3df,2p)
 hartrees
Energy at 0K-153.681200
Energy at 298.15K 
HF Energy-153.681200
Nuclear repulsion energy75.750048
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 HSEh1PBE/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 3107 3107 16.08 222.73 0.07 0.13
2 A1 1543 1543 3.12 3.18 0.20 0.33
3 A1 1328 1328 16.97 29.15 0.12 0.22
4 A1 1161 1161 0.01 2.38 0.26 0.41
5 A1 927 927 72.24 8.00 0.70 0.82
6 A2 3183 3183 0.00 108.79 0.75 0.86
7 A2 1174 1174 0.00 1.21 0.75 0.86
8 A2 1057 1057 0.00 0.04 0.75 0.86
9 B1 3199 3199 37.97 20.85 0.75 0.86
10 B1 1182 1182 4.10 3.79 0.75 0.86
11 B1 819 819 0.27 2.72 0.75 0.86
12 B2 3099 3099 34.14 9.66 0.75 0.86
13 B2 1500 1500 0.38 3.39 0.75 0.86
14 B2 1168 1168 0.32 0.26 0.75 0.86
15 B2 898 898 10.69 3.55 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 12671.6 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 12671.6 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 HSEh1PBE/6-311+G(3df,2p)
ABC
0.87168 0.74616 0.47999

See section I.F.4 to change rotational constant units
Geometric Data calculated at HSEh1PBE/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 0.919 1.264 -0.586
H5 -0.919 1.264 -0.586
H6 -0.919 -1.264 -0.586
H7 0.919 -1.264 -0.586

Atom - Atom Distances (Å)
  O1 C2 C3 H4 H5 H6 H7
O11.41501.41502.11932.11932.11932.1193
C21.41501.45751.08581.08582.20532.2053
C31.41501.45752.20532.20531.08581.0858
H42.11931.08582.20531.83823.12562.5279
H52.11931.08582.20531.83822.52793.1256
H62.11932.20531.08583.12562.52791.8382
H72.11932.20531.08582.52793.12561.8382

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 59.001 O1 C2 H4 115.237
O1 C2 H5 115.237 O1 C3 C2 59.001
O1 C3 H6 115.237 O1 C3 H7 115.237
C2 O1 C3 61.998 C2 C3 H6 119.533
C2 C3 H7 119.533 C3 C2 H4 119.533
C3 C2 H5 119.533 H4 C2 H5 115.663
H6 C3 H7 115.663
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HSEh1PBE/6-311+G(3df,2p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.541      
2 C 0.036      
3 C 0.036      
4 H 0.118      
5 H 0.118      
6 H 0.118      
7 H 0.118      


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 -1.859 1.859
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -17.368 0.000 0.000
y 0.000 -16.421 0.000
z 0.000 0.000 -20.908
Traceless
 xyz
x 1.297 0.000 0.000
y 0.000 2.717 0.000
z 0.000 0.000 -4.014
Polar
3z2-r2-8.028
x2-y2-0.947
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.827 0.000 0.000
y 0.000 4.697 0.000
z 0.000 0.000 3.793


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