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All results from a given calculation for C2H2O (Oxirene)

using model chemistry: M06-2X/6-311+G(3df,2p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at M06-2X/6-311+G(3df,2p)
 hartrees
Energy at 0K-152.469473
Energy at 298.15K 
HF Energy-152.469473
Nuclear repulsion energy62.069708
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 M06-2X/6-311+G(3df,2p)
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 3422 3422 3.61 80.62 0.19 0.32
2 A1 1859 1859 2.95 89.08 0.09 0.17
3 A1 1115 1115 20.81 7.55 0.62 0.77
4 A1 923 923 58.55 5.37 0.75 0.86
5 A2 724 724 0.00 4.90 0.75 0.86
6 B1 588 588 86.90 0.02 0.75 0.86
7 B2 3347 3347 59.61 14.83 0.75 0.86
8 B2 990 990 6.25 2.03 0.75 0.86
9 B2 403 403 2.11 13.77 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 6685.9 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 6685.9 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 M06-2X/6-311+G(3df,2p)
ABC
1.12526 0.91231 0.50383

See section I.F.4 to change rotational constant units
Geometric Data calculated at M06-2X/6-311+G(3df,2p)

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.878
C2 0.000 0.629 -0.455
C3 0.000 -0.629 -0.455
H4 0.000 1.648 -0.781
H5 0.000 -1.648 -0.781

Atom - Atom Distances (Å)
  O1 C2 C3 H4 H5
O11.47441.47442.33852.3385
C21.47441.25871.06962.3006
C31.47441.25872.30061.0696
H42.33851.06962.30063.2962
H52.33852.30061.06963.2962

picture of Oxirene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 C2 C3 64.731 O1 C2 H4 132.999
O1 C3 C2 64.731 O1 C3 H5 132.999
C2 O1 C3 50.538 C2 C3 H5 162.269
C3 C2 H4 162.269
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at M06-2X/6-311+G(3df,2p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.561      
2 C 0.018      
3 C 0.018      
4 H 0.262      
5 H 0.262      


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 -2.342 2.342
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -18.804 0.000 0.000
y 0.000 -11.665 0.000
z 0.000 0.000 -19.175
Traceless
 xyz
x -3.384 0.000 0.000
y 0.000 7.324 0.000
z 0.000 0.000 -3.940
Polar
3z2-r2-7.881
x2-y2-7.139
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.932 0.000 0.000
y 0.000 4.765 0.000
z 0.000 0.000 3.784


<r2> (average value of r2) Å2
<r2> 30.396
(<r2>)1/2 5.513