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All results from a given calculation for C2H2O (Oxirene)

using model chemistry: M06-2X/cc-pVTZ

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/cc-pVTZ
 hartrees
Energy at 0K-152.471493
Energy at 298.15K 
HF Energy-152.471493
Nuclear repulsion energy61.964471
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/cc-pVTZ
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 3431 3277 3.15 82.87 0.21 0.34
2 A1 1863 1779 1.45 70.78 0.15 0.27
3 A1 1113 1063 15.02 7.02 0.46 0.63
4 A1 921 880 56.55 6.37 0.70 0.82
5 A2 715 683 0.00 3.36 0.75 0.86
6 B1 587 561 85.43 0.31 0.75 0.86
7 B2 3354 3203 57.47 16.30 0.75 0.86
8 B2 987 943 5.85 2.36 0.75 0.86
9 B2 384 367 3.06 12.51 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 6677.4 cm-1
Scaled (by 0.9551) Zero Point Vibrational Energy (zpe) 6377.6 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/cc-pVTZ
ABC
1.12602 0.90539 0.50186

See section I.F.4 to change rotational constant units
Geometric Data calculated at M06-2X/cc-pVTZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.881
C2 0.000 0.629 -0.457
C3 0.000 -0.629 -0.457
H4 0.000 1.647 -0.784
H5 0.000 -1.647 -0.784

Atom - Atom Distances (Å)
  O1 C2 C3 H4 H5
O11.47891.47892.34222.3422
C21.47891.25861.06892.2996
C31.47891.25862.29961.0689
H42.34221.06892.29963.2938
H52.34222.29961.06893.2938

picture of Oxirene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 C2 C3 64.818 O1 C2 H4 132.997
O1 C3 C2 64.818 O1 C3 H5 132.997
C2 O1 C3 50.364 C2 C3 H5 162.186
C3 C2 H4 162.186
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at M06-2X/cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.322      
2 C 0.019      
3 C 0.019      
4 H 0.142      
5 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 -2.385 2.385
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -18.533 0.000 0.000
y 0.000 -11.650 0.000
z 0.000 0.000 -18.751
Traceless
 xyz
x -3.333 0.000 0.000
y 0.000 6.992 0.000
z 0.000 0.000 -3.659
Polar
3z2-r2-7.318
x2-y2-6.883
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.260 0.000 0.000
y 0.000 4.623 0.000
z 0.000 0.000 3.291


<r2> (average value of r2) Å2
<r2> 30.314
(<r2>)1/2 5.506