return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
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All results from a given calculation for CH2O2 (Dioxirane)

using model chemistry: B1B95/CEP-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/CEP-31G*
 hartrees
Energy at 0K-38.637439
Energy at 298.15K-38.640313
Nuclear repulsion energy41.144395
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/CEP-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 3102 2969 52.54      
2 A1 1548 1482 9.02      
3 A1 1349 1291 39.16      
4 A1 868 830 1.65      
5 A2 1006 963 0.00      
6 B1 3201 3064 51.76      
7 B1 1173 1122 7.29      
8 B2 1236 1183 4.17      
9 B2 948 907 22.50      

Unscaled Zero Point Vibrational Energy (zpe) 7214.5 cm-1
Scaled (by 0.9572) Zero Point Vibrational Energy (zpe) 6905.8 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/CEP-31G*
ABC
0.94143 0.86879 0.49915

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.739
H2 0.937 0.000 1.317
H3 -0.937 0.000 1.317
O4 0.000 0.742 -0.442
O5 0.000 -0.742 -0.442

Atom - Atom Distances (Å)
  C1 H2 H3 O4 O5
C11.10081.10081.39451.3945
H21.10081.87352.12632.1263
H31.10081.87352.12632.1263
O41.39452.12632.12631.4849
O51.39452.12632.12631.4849

picture of Dioxirane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 O4 O5 57.832 C1 O5 O4 57.832
H2 C1 H3 116.642 H2 C1 O4 116.394
H2 C1 O5 116.394 H3 C1 O4 116.394
H3 C1 O5 116.394 O4 C1 O5 64.337
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/CEP-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.188      
2 H 0.196      
3 H 0.196      
4 O -0.102      
5 O -0.102      


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 2.716 2.716
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -16.198 0.000 0.000
y 0.000 -17.653 0.000
z 0.000 0.000 -15.214
Traceless
 xyz
x 0.235 0.000 0.000
y 0.000 -1.947 0.000
z 0.000 0.000 1.712
Polar
3z2-r23.424
x2-y21.455
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.897 0.000 0.000
y 0.000 2.559 0.000
z 0.000 0.000 2.806


<r2> (average value of r2) Å2
<r2> 0.000
(<r2>)1/2 0.000