return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

All results from a given calculation for CH2O2 (Dioxirane)

using model chemistry: BLYP/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 BLYP/6-31G**
 hartrees
Energy at 0K-189.588971
Energy at 298.15K-189.591772
Nuclear repulsion energy71.956450
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 BLYP/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 2966 2943 37.14      
2 A1 1524 1513 5.87      
3 A1 1249 1240 35.01      
4 A1 759 753 2.40      
5 A2 964 956 0.00      
6 B1 3053 3030 53.11      
7 B1 1151 1142 7.24      
8 B2 1205 1195 1.28      
9 B2 862 855 15.95      

Unscaled Zero Point Vibrational Energy (zpe) 6866.3 cm-1
Scaled (by 0.9923) Zero Point Vibrational Energy (zpe) 6813.4 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 BLYP/6-31G**
ABC
0.94001 0.81182 0.47903

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.738
H2 0.933 0.000 1.324
H3 -0.933 0.000 1.324
O4 0.000 0.771 -0.442
O5 0.000 -0.771 -0.442

Atom - Atom Distances (Å)
  C1 H2 H3 O4 O5
C11.10171.10171.40981.4098
H21.10171.86562.14132.1413
H31.10171.86562.14132.1413
O41.40982.14132.14131.5418
O51.40982.14132.14131.5418

picture of Dioxirane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 O4 O5 56.851 C1 O5 O4 56.851
H2 C1 H3 115.710 H2 C1 O4 116.453
H2 C1 O5 116.453 H3 C1 O4 116.453
H3 C1 O5 116.453 O4 C1 O5 66.299
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/6-31G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.285      
2 H 0.107      
3 H 0.107      
4 O -0.249      
5 O -0.249      


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 2.383 2.383
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -16.555 0.000 0.000
y 0.000 -17.391 0.000
z 0.000 0.000 -15.601
Traceless
 xyz
x -0.059 0.000 0.000
y 0.000 -1.313 0.000
z 0.000 0.000 1.372
Polar
3z2-r22.744
x2-y20.835
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.168 0.000 0.000
y 0.000 2.534 0.000
z 0.000 0.000 3.038


<r2> (average value of r2) Å2
<r2> 31.470
(<r2>)1/2 5.610