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: MP3/6-31+G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at MP3/6-31+G**
 hartrees
Energy at 0K-189.116967
Energy at 298.15K 
HF Energy-188.605900
Nuclear repulsion energy73.267219
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 MP3/6-31+G**
Rotational Constants (cm-1) from geometry optimized at MP3/6-31+G**
ABC
0.96255 0.85165 0.49739

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP3/6-31+G**

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.729
H2 0.920 0.000 1.306
H3 -0.920 0.000 1.306
O4 0.000 0.743 -0.437
O5 0.000 -0.743 -0.437

Atom - Atom Distances (Å)
  C1 H2 H3 O4 O5
C11.08581.08581.38281.3828
H21.08581.83982.10642.1064
H31.08581.83982.10642.1064
O41.38282.10642.10641.4860
O51.38282.10642.10641.4860

picture of Dioxirane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 O4 O5 57.500 C1 O5 O4 57.500
H2 C1 H3 115.811 H2 C1 O4 116.622
H2 C1 O5 116.622 H3 C1 O4 116.622
H3 C1 O5 116.622 O4 C1 O5 65.000
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability