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

using model chemistry: PBEPBE/6-31+G**

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/6-31+G**
 hartrees
Energy at 0K-153.615344
Energy at 298.15K 
HF Energy-153.615344
Nuclear repulsion energy74.592487
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/6-31+G**
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 3031 2997 17.15 232.52 0.09 0.17
2 A1 1494 1477 4.72 3.18 0.57 0.73
3 A1 1274 1259 13.17 30.45 0.14 0.25
4 A1 1106 1093 0.20 1.29 0.18 0.31
5 A1 881 871 72.42 11.37 0.74 0.85
6 A2 3108 3072 0.00 127.68 0.75 0.86
7 A2 1136 1123 0.00 2.82 0.75 0.86
8 A2 1004 992 0.00 0.27 0.75 0.86
9 B1 3122 3086 50.66 30.69 0.75 0.86
10 B1 1127 1114 2.17 6.35 0.75 0.86
11 B1 792 783 0.09 5.62 0.75 0.86
12 B2 3025 2991 38.00 13.38 0.75 0.86
13 B2 1458 1441 0.04 7.34 0.75 0.86
14 B2 1104 1091 1.81 1.66 0.75 0.86
15 B2 832 822 12.43 3.48 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 12246.6 cm-1
Scaled (by 0.9886) Zero Point Vibrational Energy (zpe) 12107.0 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/6-31+G**
ABC
0.83976 0.72808 0.46486

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBEPBE/6-31+G**

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.862
C2 0.000 0.738 -0.376
C3 0.000 -0.738 -0.376
H4 0.929 1.280 -0.596
H5 -0.929 1.280 -0.596
H6 -0.929 -1.280 -0.596
H7 0.929 -1.280 -0.596

Atom - Atom Distances (Å)
  O1 C2 C3 H4 H5 H6 H7
O11.44151.44152.15142.15142.15142.1514
C21.44151.47591.09811.09812.23232.2323
C31.44151.47592.23232.23231.09811.0981
H42.15141.09812.23231.85873.16332.5596
H52.15141.09812.23231.85872.55963.1633
H62.15142.23231.09813.16332.55961.8587
H72.15142.23231.09812.55963.16331.8587

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 59.210 O1 C2 H4 115.133
O1 C2 H5 115.133 O1 C3 C2 59.210
O1 C3 H6 115.133 O1 C3 H7 115.133
C2 O1 C3 61.581 C2 C3 H6 119.569
C2 C3 H7 119.569 C3 C2 H4 119.569
C3 C2 H5 119.569 H4 C2 H5 115.638
H6 C3 H7 115.638
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.286      
2 C -0.179      
3 C -0.179      
4 H 0.161      
5 H 0.161      
6 H 0.161      
7 H 0.161      


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 -2.000 2.000
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -17.671 0.000 0.000
y 0.000 -16.689 0.000
z 0.000 0.000 -21.209
Traceless
 xyz
x 1.278 0.000 0.000
y 0.000 2.751 0.000
z 0.000 0.000 -4.028
Polar
3z2-r2-8.057
x2-y2-0.982
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.773 0.000 0.000
y 0.000 4.698 0.000
z 0.000 0.000 3.548


<r2> (average value of r2) Å2
<r2> 37.177
(<r2>)1/2 6.097