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

using model chemistry: PBEPBE/cc-pVDZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at PBEPBE/cc-pVDZ
 hartrees
Energy at 0K-153.608080
Energy at 298.15K 
HF Energy-153.608080
Nuclear repulsion energy74.577488
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 PBEPBE/cc-pVDZ
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A1 3005 2987 13.04 247.39 0.09 0.16
2 A1 1474 1466 4.44 2.86 0.71 0.83
3 A1 1274 1267 11.01 25.58 0.20 0.33
4 A1 1093 1087 0.08 1.16 0.67 0.81
5 A1 884 879 53.48 11.10 0.73 0.84
6 A2 3081 3063 0.00 138.70 0.75 0.86
7 A2 1119 1113 0.00 4.59 0.75 0.86
8 A2 990 984 0.00 0.10 0.75 0.86
9 B1 3097 3079 64.12 22.55 0.75 0.86
10 B1 1116 1110 1.99 14.46 0.75 0.86
11 B1 783 779 0.05 9.23 0.75 0.86
12 B2 2995 2978 40.94 12.27 0.75 0.86
13 B2 1425 1417 0.33 7.86 0.75 0.86
14 B2 1079 1073 1.39 3.13 0.75 0.86
15 B2 836 831 13.56 2.57 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 12126.7 cm-1
Scaled (by 0.9942) Zero Point Vibrational Energy (zpe) 12056.4 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 PBEPBE/cc-pVDZ
ABC
0.84110 0.72637 0.46555

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.861
C2 0.000 0.738 -0.372
C3 0.000 -0.738 -0.372
H4 0.934 1.281 -0.605
H5 -0.934 1.281 -0.605
H6 -0.934 -1.281 -0.605
H7 0.934 -1.281 -0.605

Atom - Atom Distances (Å)
  O1 C2 C3 H4 H5 H6 H7
O11.43701.43702.15952.15952.15952.1595
C21.43701.47591.10571.10572.23722.2372
C31.43701.47592.23722.23721.10571.1057
H42.15951.10572.23721.86893.17182.5627
H52.15951.10572.23721.86892.56273.1718
H62.15952.23721.10573.17182.56271.8689
H72.15952.23721.10572.56273.17181.8689

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 59.101 O1 C2 H4 115.654
O1 C2 H5 115.654 O1 C3 C2 59.101
O1 C3 H6 115.654 O1 C3 H7 115.654
C2 O1 C3 61.798 C2 C3 H6 119.437
C2 C3 H7 119.437 C3 C2 H4 119.437
C3 C2 H5 119.437 H4 C2 H5 115.364
H6 C3 H7 115.364
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.250      
2 C 0.047      
3 C 0.047      
4 H 0.039      
5 H 0.039      
6 H 0.039      
7 H 0.039      


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 -1.668 1.668
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -17.352 0.000 0.000
y 0.000 -16.725 0.000
z 0.000 0.000 -20.186
Traceless
 xyz
x 1.104 0.000 0.000
y 0.000 2.044 0.000
z 0.000 0.000 -3.148
Polar
3z2-r2-6.296
x2-y2-0.626
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.527 0.000 0.000
y 0.000 4.468 0.000
z 0.000 0.000 2.896


<r2> (average value of r2) Å2
<r2> 36.946
(<r2>)1/2 6.078