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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-189.565488
Energy at 298.15K-189.568373
Nuclear repulsion energy73.760241
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 3115 2954 30.04      
2 A1 1587 1505 8.40      
3 A1 1367 1296 39.61      
4 A1 861 816 2.42      
5 A2 1030 977 0.00      
6 B1 3212 3046 40.67      
7 B1 1203 1141 8.65      
8 B2 1259 1194 1.97      
9 B2 954 905 20.96      

Unscaled Zero Point Vibrational Energy (zpe) 7294.0 cm-1
Scaled (by 0.9483) Zero Point Vibrational Energy (zpe) 6916.9 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
0.96361 0.87305 0.50562

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 0.729
H2 0.927 0.000 1.305
H3 -0.927 0.000 1.305
O4 0.000 0.741 -0.437
O5 0.000 -0.741 -0.437

Atom - Atom Distances (Å)
  C1 H2 H3 O4 O5
C11.09091.09091.38151.3815
H21.09091.85362.10722.1072
H31.09091.85362.10722.1072
O41.38152.10722.10721.4825
O51.38152.10722.10721.4825

picture of Dioxirane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 O4 O5 57.549 C1 O5 O4 57.549
H2 C1 H3 116.323 H2 C1 O4 116.433
H2 C1 O5 116.433 H3 C1 O4 116.433
H3 C1 O5 116.433 O4 C1 O5 64.902
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 0.147      
2 H 0.184      
3 H 0.184      
4 O -0.257      
5 O -0.257      


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 -16.351 0.000 0.000
y 0.000 -17.476 0.000
z 0.000 0.000 -15.348
Traceless
 xyz
x 0.061 0.000 0.000
y 0.000 -1.626 0.000
z 0.000 0.000 1.565
Polar
3z2-r23.130
x2-y21.125
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.064 0.000 0.000
y 0.000 2.407 0.000
z 0.000 0.000 2.865


<r2> (average value of r2) Å2
<r2> 30.391
(<r2>)1/2 5.513