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All results from a given calculation for CH2O2 (Dioxirane)

using model chemistry: B3PW91/3-21G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at B3PW91/3-21G*
 hartrees
Energy at 0K-188.493437
Energy at 298.15K-188.496241
Nuclear repulsion energy70.495234
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 B3PW91/3-21G*
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 3119 2993 11.18      
2 A1 1583 1518 1.36      
3 A1 1212 1163 9.04      
4 A1 827 793 2.35      
5 A2 976 936 0.00      
6 B1 3225 3094 34.12      
7 B1 1152 1105 4.09      
8 B2 1209 1160 11.64      
9 B2 792 760 5.73      

Unscaled Zero Point Vibrational Energy (zpe) 7047.1 cm-1
Scaled (by 0.9594) Zero Point Vibrational Energy (zpe) 6761.0 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 B3PW91/3-21G*
ABC
0.88881 0.79032 0.45766

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/3-21G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.771
H2 0.927 0.000 1.338
H3 -0.927 0.000 1.338
O4 0.000 0.783 -0.456
O5 0.000 -0.783 -0.456

Atom - Atom Distances (Å)
  C1 H2 H3 O4 O5
C11.08641.08641.45521.4552
H21.08641.85352.16542.1654
H31.08641.85352.16542.1654
O41.45522.16542.16541.5655
O51.45522.16542.16541.5655

picture of Dioxirane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 O4 O5 57.460 C1 O5 O4 57.460
H2 C1 H3 117.079 H2 C1 O4 116.102
H2 C1 O5 116.102 H3 C1 O4 116.102
H3 C1 O5 116.102 O4 C1 O5 65.081
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/3-21G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.075      
2 H 0.239      
3 H 0.239      
4 O -0.276      
5 O -0.276      


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 2.833 2.833
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -16.287 0.000 0.000
y 0.000 -17.843 0.000
z 0.000 0.000 -15.206
Traceless
 xyz
x 0.238 0.000 0.000
y 0.000 -2.097 0.000
z 0.000 0.000 1.859
Polar
3z2-r23.718
x2-y21.556
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.660 0.000 0.000
y 0.000 2.253 0.000
z 0.000 0.000 2.810


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