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All results from a given calculation for C2H2O (Oxirene)

using model chemistry: B97D3/6-311+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 B97D3/6-311+G(3df,2p)
 hartrees
Energy at 0K-152.439825
Energy at 298.15K 
HF Energy-152.439825
Nuclear repulsion energy61.251852
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 B97D3/6-311+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 3340 3296 1.78 92.11 0.19 0.32
2 A1 1785 1762 3.54 89.48 0.10 0.17
3 A1 1046 1032 11.15 6.34 0.63 0.77
4 A1 863 851 61.47 6.72 0.75 0.86
5 A2 614 606 0.00 5.95 0.75 0.86
6 B1 518 511 85.95 0.13 0.75 0.86
7 B2 3269 3226 39.04 17.52 0.75 0.86
8 B2 937 925 7.59 2.46 0.75 0.86
9 B2 254i 251i 3.99 19.05 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 6057.8 cm-1
Scaled (by 0.987) Zero Point Vibrational Energy (zpe) 5979.0 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 B97D3/6-311+G(3df,2p)
ABC
1.11098 0.87574 0.48972

See section I.F.4 to change rotational constant units
Geometric Data calculated at B97D3/6-311+G(3df,2p)

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.896
C2 0.000 0.634 -0.464
C3 0.000 -0.634 -0.464
H4 0.000 1.655 -0.798
H5 0.000 -1.655 -0.798

Atom - Atom Distances (Å)
  O1 C2 C3 H4 H5
O11.50121.50122.36852.3685
C21.50121.26851.07372.3132
C31.50121.26852.31321.0737
H42.36851.07372.31323.3095
H52.36852.31321.07373.3095

picture of Oxirene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 C2 C3 65.008 O1 C2 H4 133.109
O1 C3 C2 65.008 O1 C3 H5 133.109
C2 O1 C3 49.983 C2 C3 H5 161.883
C3 C2 H4 161.883
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B97D3/6-311+G(3df,2p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.529      
2 C 0.060      
3 C 0.060      
4 H 0.205      
5 H 0.205      


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 -2.329 2.329
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -18.824 0.000 0.000
y 0.000 -11.856 0.000
z 0.000 0.000 -19.067
Traceless
 xyz
x -3.363 0.000 0.000
y 0.000 7.090 0.000
z 0.000 0.000 -3.727
Polar
3z2-r2-7.454
x2-y2-6.969
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.164 0.000 0.000
y 0.000 4.946 0.000
z 0.000 0.000 4.086


<r2> (average value of r2) Å2
<r2> 30.949
(<r2>)1/2 5.563