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

using model chemistry: B3LYP/cc-pVQZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at B3LYP/cc-pVQZ
 hartrees
Energy at 0K-153.862117
Energy at 298.15K 
HF Energy-153.862117
Nuclear repulsion energy75.375123
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 B3LYP/cc-pVQZ
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 3088 2992 15.75 245.03 0.07 0.13
2 A1 1540 1492 2.46 1.79 0.64 0.78
3 A1 1300 1260 14.87 28.45 0.13 0.23
4 A1 1150 1114 0.01 1.98 0.32 0.48
5 A1 889 862 67.08 9.37 0.73 0.84
6 A2 3161 3062 0.00 117.15 0.75 0.86
7 A2 1178 1141 0.00 1.21 0.75 0.86
8 A2 1048 1015 0.00 0.02 0.75 0.86
9 B1 3176 3077 45.27 20.40 0.75 0.86
10 B1 1172 1135 3.68 6.00 0.75 0.86
11 B1 820 794 0.06 4.32 0.75 0.86
12 B2 3082 2986 40.05 10.68 0.75 0.86
13 B2 1507 1460 0.00 4.46 0.75 0.86
14 B2 1161 1124 0.85 0.99 0.75 0.86
15 B2 844 817 11.62 3.51 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 12557.5 cm-1
Scaled (by 0.9688) Zero Point Vibrational Energy (zpe) 12165.7 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 B3LYP/cc-pVQZ
ABC
0.85820 0.74280 0.47412

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/cc-pVQZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.853
C2 0.000 0.731 -0.372
C3 0.000 -0.731 -0.372
H4 0.917 1.266 -0.591
H5 -0.917 1.266 -0.591
H6 -0.917 -1.266 -0.591
H7 0.917 -1.266 -0.591

Atom - Atom Distances (Å)
  O1 C2 C3 H4 H5 H6 H7
O11.42701.42702.12862.12862.12862.1286
C21.42701.46281.08411.08412.20912.2091
C31.42701.46282.20912.20911.08411.0841
H42.12861.08412.20911.83433.12722.5327
H52.12861.08412.20911.83432.53273.1272
H62.12862.20911.08413.12722.53271.8343
H72.12862.20911.08412.53273.12721.8343

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 59.167 O1 C2 H4 115.235
O1 C2 H5 115.235 O1 C3 C2 59.167
O1 C3 H6 115.235 O1 C3 H7 115.235
C2 O1 C3 61.667 C2 C3 H6 119.566
C2 C3 H7 119.566 C3 C2 H4 119.566
C3 C2 H5 119.566 H4 C2 H5 115.561
H6 C3 H7 115.561
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/cc-pVQZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.368      
2 C 0.033      
3 C 0.033      
4 H 0.076      
5 H 0.076      
6 H 0.076      
7 H 0.076      


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 -1.908 1.908
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -17.471 0.000 0.000
y 0.000 -16.611 0.000
z 0.000 0.000 -20.858
Traceless
 xyz
x 1.263 0.000 0.000
y 0.000 2.554 0.000
z 0.000 0.000 -3.816
Polar
3z2-r2-7.633
x2-y2-0.860
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.785 0.000 0.000
y 0.000 4.744 0.000
z 0.000 0.000 3.648


<r2> (average value of r2) Å2
<r2> 36.520
(<r2>)1/2 6.043