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

using model chemistry: B3LYP/6-31G

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/6-31G
 hartrees
Energy at 0K-153.729876
Energy at 298.15K 
HF Energy-153.729876
Nuclear repulsion energy73.441764
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/6-31G
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 3147 3027 4.88 197.19 0.09 0.17
2 A1 1560 1501 0.45 6.25 0.73 0.85
3 A1 1274 1225 6.78 21.53 0.14 0.24
4 A1 1139 1096 3.93 6.60 0.39 0.56
5 A1 831 800 46.00 12.02 0.70 0.82
6 A2 3227 3104 0.00 108.16 0.75 0.86
7 A2 1204 1159 0.00 5.95 0.75 0.86
8 A2 1011 972 0.00 0.00 0.75 0.86
9 B1 3245 3121 49.08 14.08 0.75 0.86
10 B1 1122 1079 1.57 18.35 0.75 0.86
11 B1 835 803 0.04 10.81 0.75 0.86
12 B2 3137 3018 23.92 8.94 0.75 0.86
13 B2 1541 1482 0.07 6.06 0.75 0.86
14 B2 1156 1112 9.20 4.10 0.75 0.86
15 B2 759 730 6.38 8.23 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 12593.1 cm-1
Scaled (by 0.962) Zero Point Vibrational Energy (zpe) 12114.5 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/6-31G
ABC
0.78600 0.72930 0.44634

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/6-31G

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.899
C2 0.000 0.740 -0.395
C3 0.000 -0.740 -0.395
H4 0.918 1.278 -0.612
H5 -0.918 1.278 -0.612
H6 -0.918 -1.278 -0.612
H7 0.918 -1.278 -0.612

Atom - Atom Distances (Å)
  O1 C2 C3 H4 H5 H6 H7
O11.49061.49062.18152.18152.18152.1815
C21.49061.47951.08601.08602.22732.2273
C31.49061.47952.22732.22731.08601.0860
H42.18151.08602.22731.83593.14702.5559
H52.18151.08602.22731.83592.55593.1470
H62.18152.22731.08603.14702.55591.8359
H72.18152.22731.08602.55593.14701.8359

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 60.247 O1 C2 H4 114.795
O1 C2 H5 114.795 O1 C3 C2 60.247
O1 C3 H6 114.795 O1 C3 H7 114.795
C2 O1 C3 59.507 C2 C3 H6 119.709
C2 C3 H7 119.709 C3 C2 H4 119.709
C3 C2 H5 119.709 H4 C2 H5 115.402
H6 C3 H7 115.402
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/6-31G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.466      
2 C -0.083      
3 C -0.083      
4 H 0.158      
5 H 0.158      
6 H 0.158      
7 H 0.158      


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 -2.509 2.509
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -17.288 0.000 0.000
y 0.000 -16.234 0.000
z 0.000 0.000 -20.979
Traceless
 xyz
x 1.319 0.000 0.000
y 0.000 2.900 0.000
z 0.000 0.000 -4.218
Polar
3z2-r2-8.437
x2-y2-1.054
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.074 0.000 0.000
y 0.000 4.185 0.000
z 0.000 0.000 2.816


<r2> (average value of r2) Å2
<r2> 37.655
(<r2>)1/2 6.136