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All results from a given calculation for CH2O2 (Dioxirane)

using model chemistry: mPW1PW91/6-31G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at mPW1PW91/6-31G**
 hartrees
Energy at 0K-189.568119
Energy at 298.15K-189.571007
Nuclear repulsion energy73.751266
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 mPW1PW91/6-31G**
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 3097 2947 29.79      
2 A1 1576 1499 7.72      
3 A1 1365 1299 39.87      
4 A1 861 820 2.41      
5 A2 1026 976 0.00      
6 B1 3196 3041 37.99      
7 B1 1196 1138 8.46      
8 B2 1257 1196 2.12      
9 B2 953 907 20.87      

Unscaled Zero Point Vibrational Energy (zpe) 7263.1 cm-1
Scaled (by 0.9515) Zero Point Vibrational Energy (zpe) 6910.9 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 mPW1PW91/6-31G**
ABC
0.96251 0.87364 0.50546

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/6-31G**

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.730
H2 0.926 0.000 1.306
H3 -0.926 0.000 1.306
O4 0.000 0.741 -0.437
O5 0.000 -0.741 -0.437

Atom - Atom Distances (Å)
  C1 H2 H3 O4 O5
C11.09101.09101.38191.3819
H21.09101.85262.10832.1083
H31.09101.85262.10832.1083
O41.38192.10832.10831.4821
O51.38192.10832.10831.4821

picture of Dioxirane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 O4 O5 57.572 C1 O5 O4 57.572
H2 C1 H3 116.211 H2 C1 O4 116.485
H2 C1 O5 116.485 H3 C1 O4 116.485
H3 C1 O5 116.485 O4 C1 O5 64.856
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/6-31G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.246      
2 H 0.144      
3 H 0.144      
4 O -0.267      
5 O -0.267      


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 2.566 2.566
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -16.341 0.000 0.000
y 0.000 -17.470 0.000
z 0.000 0.000 -15.348
Traceless
 xyz
x 0.068 0.000 0.000
y 0.000 -1.625 0.000
z 0.000 0.000 1.557
Polar
3z2-r23.115
x2-y21.128
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.087 0.000 0.000
y 0.000 2.431 0.000
z 0.000 0.000 2.888


<r2> (average value of r2) Å2
<r2> 30.395
(<r2>)1/2 5.513