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: B1B95/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at B1B95/6-31G*
 hartrees
Energy at 0K-189.556641
Energy at 298.15K-189.559523
Nuclear repulsion energy73.730869
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 B1B95/6-31G*
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 3101 2943 30.11      
2 A1 1578 1498 8.88      
3 A1 1362 1293 38.74      
4 A1 861 817 2.44      
5 A2 1022 970 0.00      
6 B1 3197 3035 41.41      
7 B1 1194 1134 8.68      
8 B2 1250 1186 1.74      
9 B2 956 907 19.87      

Unscaled Zero Point Vibrational Energy (zpe) 7259.9 cm-1
Scaled (by 0.9493) Zero Point Vibrational Energy (zpe) 6891.8 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 B1B95/6-31G*
ABC
0.96369 0.87162 0.50518

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/6-31G*

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 0.742 -0.437
O5 0.000 -0.742 -0.437

Atom - Atom Distances (Å)
  C1 H2 H3 O4 O5
C11.09111.09111.38171.3817
H21.09111.85392.10752.1075
H31.09111.85392.10752.1075
O41.38172.10752.10751.4838
O51.38172.10752.10751.4838

picture of Dioxirane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 O4 O5 57.524 C1 O5 O4 57.524
H2 C1 H3 116.326 H2 C1 O4 116.424
H2 C1 O5 116.424 H3 C1 O4 116.424
H3 C1 O5 116.424 O4 C1 O5 64.953
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.162      
2 H 0.174      
3 H 0.174      
4 O -0.255      
5 O -0.255      


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 2.530 2.530
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -16.354 0.000 0.000
y 0.000 -17.438 0.000
z 0.000 0.000 -15.366
Traceless
 xyz
x 0.048 0.000 0.000
y 0.000 -1.578 0.000
z 0.000 0.000 1.530
Polar
3z2-r23.060
x2-y21.084
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.078 0.000 0.000
y 0.000 2.402 0.000
z 0.000 0.000 2.878


<r2> (average value of r2) Å2
<r2> 30.403
(<r2>)1/2 5.514