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

using model chemistry: PBE1PBE/6-31G(2df,p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at PBE1PBE/6-31G(2df,p)
 hartrees
Energy at 0K-153.624884
Energy at 298.15K 
HF Energy-153.624884
Nuclear repulsion energy75.659591
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 PBE1PBE/6-31G(2df,p)
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 3114 2980 12.14 186.50 0.09 0.17
2 A1 1549 1482 3.40 2.85 0.62 0.77
3 A1 1334 1277 13.68 23.70 0.16 0.28
4 A1 1165 1115 0.12 1.59 0.37 0.54
5 A1 937 897 56.11 10.00 0.73 0.84
6 A2 3192 3054 0.00 100.80 0.75 0.86
7 A2 1173 1123 0.00 3.54 0.75 0.86
8 A2 1053 1007 0.00 0.20 0.75 0.86
9 B1 3208 3070 44.68 14.12 0.75 0.86
10 B1 1180 1130 3.42 11.64 0.75 0.86
11 B1 816 781 0.01 6.60 0.75 0.86
12 B2 3104 2971 35.41 9.40 0.75 0.86
13 B2 1502 1438 0.05 5.89 0.75 0.86
14 B2 1155 1105 0.69 2.30 0.75 0.86
15 B2 911 872 11.72 3.51 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 12696.3 cm-1
Scaled (by 0.957) Zero Point Vibrational Energy (zpe) 12150.4 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 PBE1PBE/6-31G(2df,p)
ABC
0.87181 0.74259 0.47891

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBE1PBE/6-31G(2df,p)

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.845
C2 0.000 0.731 -0.366
C3 0.000 -0.731 -0.366
H4 0.921 1.267 -0.591
H5 -0.921 1.267 -0.591
H6 -0.921 -1.267 -0.591
H7 0.921 -1.267 -0.591

Atom - Atom Distances (Å)
  O1 C2 C3 H4 H5 H6 H7
O11.41431.41432.12492.12492.12492.1249
C21.41431.46111.08931.08932.21122.2112
C31.41431.46112.21122.21121.08931.0893
H42.12491.08932.21121.84183.13282.5343
H52.12491.08932.21121.84182.53433.1328
H62.12492.21121.08933.13282.53431.8418
H72.12492.21121.08932.53433.13281.8418

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 58.899 O1 C2 H4 115.544
O1 C2 H5 115.544 O1 C3 C2 58.899
O1 C3 H6 115.544 O1 C3 H7 115.544
C2 O1 C3 62.203 C2 C3 H6 119.512
C2 C3 H7 119.512 C3 C2 H4 119.512
C3 C2 H5 119.512 H4 C2 H5 115.433
H6 C3 H7 115.433
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBE1PBE/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.234      
2 C -0.167      
3 C -0.167      
4 H 0.142      
5 H 0.142      
6 H 0.142      
7 H 0.142      


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 -1.744 1.744
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -17.015 0.000 0.000
y 0.000 -16.294 0.000
z 0.000 0.000 -20.151
Traceless
 xyz
x 1.207 0.000 0.000
y 0.000 2.289 0.000
z 0.000 0.000 -3.496
Polar
3z2-r2-6.993
x2-y2-0.721
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.445 0.000 0.000
y 0.000 4.292 0.000
z 0.000 0.000 2.892


<r2> (average value of r2) Å2
<r2> 36.066
(<r2>)1/2 6.005