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

using model chemistry: B2PLYP/STO-3G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at B2PLYP/STO-3G
 hartrees
Energy at 0K-151.560308
Energy at 298.15K 
HF Energy-151.505733
Nuclear repulsion energy73.262548
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 B2PLYP/STO-3G
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 3375 3375 0.07 70.78 0.10 0.18
2 A1 1680 1680 0.14 13.52 0.71 0.83
3 A1 1381 1381 1.14 15.70 0.29 0.44
4 A1 1258 1258 3.92 2.58 0.26 0.41
5 A1 983 983 6.14 7.35 0.74 0.85
6 A2 3513 3513 0.00 51.73 0.75 0.86
7 A2 1238 1238 0.00 6.45 0.75 0.86
8 A2 1074 1074 0.00 0.07 0.75 0.86
9 B1 3522 3522 4.23 8.19 0.75 0.86
10 B1 1187 1187 6.45 11.33 0.75 0.86
11 B1 875 875 0.04 3.86 0.75 0.86
12 B2 3364 3364 1.80 4.89 0.75 0.86
13 B2 1639 1639 0.56 5.46 0.75 0.86
14 B2 1212 1212 0.89 0.49 0.75 0.86
15 B2 1056 1056 0.00 6.22 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 13679.1 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 13679.1 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 B2PLYP/STO-3G
ABC
0.80288 0.70819 0.44527

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP/STO-3G

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.887
C2 0.000 0.752 -0.380
C3 0.000 -0.752 -0.380
H4 0.928 1.293 -0.633
H5 -0.928 1.293 -0.633
H6 -0.928 -1.293 -0.633
H7 0.928 -1.293 -0.633

Atom - Atom Distances (Å)
  O1 C2 C3 H4 H5 H6 H7
O11.47391.47392.20062.20062.20062.2006
C21.47391.50491.10321.10322.26062.2606
C31.47391.50492.26062.26061.10321.1032
H42.20061.10322.26061.85563.18362.5869
H52.20061.10322.26061.85562.58693.1836
H62.20062.26061.10323.18362.58691.8556
H72.20062.26061.10322.58693.18361.8556

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 59.301 O1 C2 H4 116.545
O1 C2 H5 116.545 O1 C3 C2 59.301
O1 C3 H6 116.545 O1 C3 H7 116.545
C2 O1 C3 61.398 C2 C3 H6 119.365
C2 C3 H7 119.365 C3 C2 H4 119.365
C3 C2 H5 119.365 H4 C2 H5 114.493
H6 C3 H7 114.493
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B2PLYP/STO-3G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.167      
2 C -0.072      
3 C -0.072      
4 H 0.078      
5 H 0.078      
6 H 0.078      
7 H 0.078      


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 -1.273 1.273
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -16.274 0.000 0.000
y 0.000 -15.953 0.000
z 0.000 0.000 -18.702
Traceless
 xyz
x 1.054 0.000 0.000
y 0.000 1.535 0.000
z 0.000 0.000 -2.589
Polar
3z2-r2-5.178
x2-y2-0.321
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.629 0.000 0.000
y 0.000 2.470 0.000
z 0.000 0.000 1.367


<r2> (average value of r2) Å2
<r2> 37.162
(<r2>)1/2 6.096