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: B3LYP/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 B3LYP/STO-3G
 hartrees
Energy at 0K-187.094611
Energy at 298.15K-187.097428
Nuclear repulsion energy70.951166
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 B3LYP/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 3264 2913 0.91      
2 A1 1636 1460 0.16      
3 A1 1401 1250 0.69      
4 A1 1066 951 0.19      
5 A2 992 886 0.00      
6 B1 3416 3048 4.80      
7 B1 1136 1014 6.73      
8 B2 1197 1069 8.50      
9 B2 963 859 1.39      

Unscaled Zero Point Vibrational Energy (zpe) 7535.2 cm-1
Scaled (by 0.8924) Zero Point Vibrational Energy (zpe) 6724.5 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 B3LYP/STO-3G
ABC
0.86310 0.83465 0.46598

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/STO-3G

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.794
H2 0.939 0.000 1.392
H3 -0.939 0.000 1.392
O4 0.000 0.745 -0.472
O5 0.000 -0.745 -0.472

Atom - Atom Distances (Å)
  C1 H2 H3 O4 O5
C11.11271.11271.46871.4687
H21.11271.87732.21532.2153
H31.11271.87732.21532.2153
O41.46872.21532.21531.4900
O51.46872.21532.21531.4900

picture of Dioxirane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 O4 O5 59.519 C1 O5 O4 59.519
H2 C1 H3 115.038 H2 C1 O4 117.568
H2 C1 O5 117.568 H3 C1 O4 117.568
H3 C1 O5 117.568 O4 C1 O5 60.962
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/STO-3G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.002      
2 H 0.095      
3 H 0.095      
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 1.630 1.630
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -14.930 0.000 0.000
y 0.000 -16.127 0.000
z 0.000 0.000 -14.239
Traceless
 xyz
x 0.253 0.000 0.000
y 0.000 -1.543 0.000
z 0.000 0.000 1.290
Polar
3z2-r22.580
x2-y21.197
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 0.897 0.000 0.000
y 0.000 1.260 0.000
z 0.000 0.000 1.912


<r2> (average value of r2) Å2
<r2> 31.289
(<r2>)1/2 5.594