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

using model chemistry: B3PW91/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 B3PW91/cc-pVTZ
 hartrees
Energy at 0K-153.789906
Energy at 298.15K 
HF Energy-153.789906
Nuclear repulsion energy75.561214
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 B3PW91/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 3095 2976 15.19      
2 A1 1539 1480 3.02      
3 A1 1315 1264 15.21      
4 A1 1152 1108 0.02      
5 A1 915 880 66.06      
6 A2 3169 3047 0.00      
7 A2 1171 1126 0.00      
8 A2 1048 1008 0.00      
9 B1 3185 3062 46.89      
10 B1 1173 1128 3.37      
11 B1 818 787 0.03      
12 B2 3087 2969 40.48      
13 B2 1499 1441 0.01      
14 B2 1153 1109 1.25      
15 B2 878 845 12.08      

Unscaled Zero Point Vibrational Energy (zpe) 12597.5 cm-1
Scaled (by 0.9616) Zero Point Vibrational Energy (zpe) 12113.8 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 B3PW91/cc-pVTZ
ABC
0.86487 0.74444 0.47721

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/cc-pVTZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.849
C2 0.000 0.730 -0.369
C3 0.000 -0.730 -0.369
H4 0.919 1.265 -0.591
H5 -0.919 1.265 -0.591
H6 -0.919 -1.265 -0.591
H7 0.919 -1.265 -0.591

Atom - Atom Distances (Å)
  O1 C2 C3 H4 H5 H6 H7
O11.42021.42022.12562.12562.12562.1256
C21.42021.46011.08621.08622.20752.2075
C31.42021.46012.20752.20751.08621.0862
H42.12561.08622.20751.83823.12692.5295
H52.12561.08622.20751.83822.52953.1269
H62.12562.20751.08623.12692.52951.8382
H72.12562.20751.08622.52953.12691.8382

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 59.068 O1 C2 H4 115.352
O1 C2 H5 115.352 O1 C3 C2 59.068
O1 C3 H6 115.352 O1 C3 H7 115.352
C2 O1 C3 61.864 C2 C3 H6 119.491
C2 C3 H7 119.491 C3 C2 H4 119.491
C3 C2 H5 119.491 H4 C2 H5 115.591
H6 C3 H7 115.591
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.286      
2 C -0.024      
3 C -0.024      
4 H 0.083      
5 H 0.083      
6 H 0.083      
7 H 0.083      


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 -1.842 1.842
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -17.224 0.000 0.000
y 0.000 -16.423 0.000
z 0.000 0.000 -20.495
Traceless
 xyz
x 1.235 0.000 0.000
y 0.000 2.436 0.000
z 0.000 0.000 -3.671
Polar
3z2-r2-7.343
x2-y2-0.800
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.621 0.000 0.000
y 0.000 4.585 0.000
z 0.000 0.000 3.340


<r2> (average value of r2) Å2
<r2> 36.245
(<r2>)1/2 6.020