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All results from a given calculation for C2H2O (Oxirene)

using model chemistry: B97D3/6-311G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at B97D3/6-311G**
 hartrees
Energy at 0K-152.419615
Energy at 298.15K 
HF Energy-152.419615
Nuclear repulsion energy61.015392
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 B97D3/6-311G**
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 3348 3300 0.96 93.33 0.21 0.35
2 A1 1786 1760 0.99 59.85 0.19 0.32
3 A1 1043 1028 4.51 5.41 0.48 0.65
4 A1 858 846 53.13 8.12 0.61 0.76
5 A2 560 552 0.00 2.90 0.75 0.86
6 B1 502 495 85.66 0.65 0.75 0.86
7 B2 3275 3228 32.60 19.01 0.75 0.86
8 B2 920 907 6.67 3.13 0.75 0.86
9 B2 367i 361i 6.67 15.85 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 5962.6 cm-1
Scaled (by 0.9857) Zero Point Vibrational Energy (zpe) 5877.4 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 B97D3/6-311G**
ABC
1.10653 0.86557 0.48567

See section I.F.4 to change rotational constant units
Geometric Data calculated at B97D3/6-311G**

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.901
C2 0.000 0.636 -0.468
C3 0.000 -0.636 -0.468
H4 0.000 1.658 -0.799
H5 0.000 -1.658 -0.799

Atom - Atom Distances (Å)
  O1 C2 C3 H4 H5
O11.50951.50952.37492.3749
C21.50951.27131.07442.3170
C31.50951.27132.31701.0744
H42.37491.07442.31703.3151
H52.37492.31701.07443.3151

picture of Oxirene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 C2 C3 65.097 O1 C2 H4 132.884
O1 C3 C2 65.097 O1 C3 H5 132.884
C2 O1 C3 49.807 C2 C3 H5 162.019
C3 C2 H4 162.019
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B97D3/6-311G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.356      
2 C 0.062      
3 C 0.062      
4 H 0.116      
5 H 0.116      


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 -2.456 2.456
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -18.324 0.000 0.000
y 0.000 -11.660 0.000
z 0.000 0.000 -18.449
Traceless
 xyz
x -3.270 0.000 0.000
y 0.000 6.727 0.000
z 0.000 0.000 -3.457
Polar
3z2-r2-6.913
x2-y2-6.664
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.857 0.000 0.000
y 0.000 4.537 0.000
z 0.000 0.000 3.080


<r2> (average value of r2) Å2
<r2> 30.830
(<r2>)1/2 5.553