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All results from a given calculation for C2H2O (Oxirene)

using model chemistry: B97D3/aug-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 B97D3/aug-cc-pVTZ
 hartrees
Energy at 0K-152.444565
Energy at 298.15K 
HF Energy-152.444565
Nuclear repulsion energy61.202601
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 B97D3/aug-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 3343 3292 1.82 94.96 0.19 0.32
2 A1 1784 1757 3.59 94.61 0.09 0.16
3 A1 1042 1026 11.98 5.49 0.64 0.78
4 A1 861 848 63.00 6.80 0.74 0.85
5 A2 615 606 0.00 4.99 0.75 0.86
6 B1 522 514 82.67 0.07 0.75 0.86
7 B2 3271 3221 39.54 17.90 0.75 0.86
8 B2 937 922 7.80 2.90 0.75 0.86
9 B2 250i 247i 3.57 19.37 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 6062.6 cm-1
Scaled (by 0.9847) Zero Point Vibrational Energy (zpe) 5969.8 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 B97D3/aug-cc-pVTZ
ABC
1.11088 0.87295 0.48882

See section I.F.4 to change rotational constant units
Geometric Data calculated at B97D3/aug-cc-pVTZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.898
C2 0.000 0.634 -0.465
C3 0.000 -0.634 -0.465
H4 0.000 1.654 -0.799
H5 0.000 -1.654 -0.799

Atom - Atom Distances (Å)
  O1 C2 C3 H4 H5
O11.50331.50332.37012.3701
C21.50331.26871.07342.3131
C31.50331.26872.31311.0734
H42.37011.07342.31313.3088
H52.37012.31311.07343.3088

picture of Oxirene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 C2 C3 65.039 O1 C2 H4 133.106
O1 C3 C2 65.039 O1 C3 H5 133.106
C2 O1 C3 49.921 C2 C3 H5 161.855
C3 C2 H4 161.855
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B97D3/aug-cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.431      
2 C -0.156      
3 C -0.156      
4 H 0.372      
5 H 0.372      


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 -2.304 2.304
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -18.825 0.000 0.000
y 0.000 -11.933 0.000
z 0.000 0.000 -19.091
Traceless
 xyz
x -3.313 0.000 0.000
y 0.000 7.024 0.000
z 0.000 0.000 -3.711
Polar
3z2-r2-7.423
x2-y2-6.892
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.295 0.000 0.000
y 0.000 5.071 0.000
z 0.000 0.000 4.228


<r2> (average value of r2) Å2
<r2> 31.003
(<r2>)1/2 5.568