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All results from a given calculation for CH2O2 (Dioxirane)

using model chemistry: B3PW91/STO-3G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at B3PW91/STO-3G
 hartrees
Energy at 0K-187.048970
Energy at 298.15K-187.051802
Nuclear repulsion energy71.288801
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 B3PW91/STO-3G
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 3286 2908 1.12      
2 A1 1645 1456 0.15      
3 A1 1423 1260 0.93      
4 A1 1085 960 0.30      
5 A2 1000 885 0.00      
6 B1 3437 3042 4.06      
7 B1 1145 1013 6.58      
8 B2 1208 1069 8.56      
9 B2 985 872 1.65      

Unscaled Zero Point Vibrational Energy (zpe) 7606.7 cm-1
Scaled (by 0.885) Zero Point Vibrational Energy (zpe) 6731.9 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 B3PW91/STO-3G
ABC
0.87235 0.84160 0.47071

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/STO-3G

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.790
H2 0.937 0.000 1.388
H3 -0.937 0.000 1.388
O4 0.000 0.741 -0.470
O5 0.000 -0.741 -0.470

Atom - Atom Distances (Å)
  C1 H2 H3 O4 O5
C11.11181.11181.46111.4611
H21.11181.87462.20852.2085
H31.11181.87462.20852.2085
O41.46112.20852.20851.4815
O51.46112.20852.20851.4815

picture of Dioxirane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 O4 O5 59.538 C1 O5 O4 59.538
H2 C1 H3 114.918 H2 C1 O4 117.623
H2 C1 O5 117.623 H3 C1 O4 117.623
H3 C1 O5 117.623 O4 C1 O5 60.925
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/STO-3G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.010      
2 H 0.099      
3 H 0.099      
4 O -0.094      
5 O -0.094      


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 1.636 1.636
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -14.906 0.000 0.000
y 0.000 -16.141 0.000
z 0.000 0.000 -14.229
Traceless
 xyz
x 0.279 0.000 0.000
y 0.000 -1.573 0.000
z 0.000 0.000 1.294
Polar
3z2-r22.588
x2-y21.235
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 0.884 0.000 0.000
y 0.000 1.238 0.000
z 0.000 0.000 1.878


<r2> (average value of r2) Å2
<r2> 31.087
(<r2>)1/2 5.576