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All results from a given calculation for CH2O2 (Dioxirane)

using model chemistry: mPW1PW91/6-311G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at mPW1PW91/6-311G*
 hartrees
Energy at 0K-189.613002
Energy at 298.15K-189.615890
Nuclear repulsion energy74.034370
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 mPW1PW91/6-311G*
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 3096 2955 38.40      
2 A1 1573 1501 6.76      
3 A1 1362 1300 49.59      
4 A1 854 815 1.85      
5 A2 1041 994 0.00      
6 B1 3197 3051 43.02      
7 B1 1205 1150 10.30      
8 B2 1258 1201 2.23      
9 B2 945 902 26.28      

Unscaled Zero Point Vibrational Energy (zpe) 7265.3 cm-1
Scaled (by 0.9544) Zero Point Vibrational Energy (zpe) 6934.0 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 mPW1PW91/6-311G*
ABC
0.97001 0.87997 0.50986

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/6-311G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.727
H2 0.928 0.000 1.297
H3 -0.928 0.000 1.297
O4 0.000 0.738 -0.435
O5 0.000 -0.738 -0.435

Atom - Atom Distances (Å)
  C1 H2 H3 O4 O5
C11.08911.08911.37661.3766
H21.08911.85622.09892.0989
H31.08911.85622.09892.0989
O41.37662.09892.09891.4759
O51.37662.09892.09891.4759

picture of Dioxirane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 O4 O5 57.583 C1 O5 O4 57.583
H2 C1 H3 116.905 H2 C1 O4 116.211
H2 C1 O5 116.211 H3 C1 O4 116.211
H3 C1 O5 116.211 O4 C1 O5 64.834
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/6-311G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.066      
2 H 0.218      
3 H 0.218      
4 O -0.184      
5 O -0.184      


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 2.591 2.591
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -16.351 0.000 0.000
y 0.000 -17.709 0.000
z 0.000 0.000 -15.465
Traceless
 xyz
x 0.236 0.000 0.000
y 0.000 -1.801 0.000
z 0.000 0.000 1.565
Polar
3z2-r23.130
x2-y21.358
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.029 0.000 0.000
y 0.000 2.485 0.000
z 0.000 0.000 2.881


<r2> (average value of r2) Å2
<r2> 30.310
(<r2>)1/2 5.505