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=FULL/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at MP3=FULL/6-31G*
 hartrees
Energy at 0K-189.109472
Energy at 298.15K-189.112361
HF Energy-188.602422
Nuclear repulsion energy73.251724
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=FULL/6-31G*
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 3154 2959 22.41      
2 A1 1612 1512 5.78      
3 A1 1357 1274 33.80      
4 A1 828 777 1.59      
5 A2 1063 997 0.00      
6 B1 3253 3052 33.76      
7 B1 1218 1143 9.02      
8 B2 1300 1220 0.79      
9 B2 976 915 21.55      

Unscaled Zero Point Vibrational Energy (zpe) 7380.3 cm-1
Scaled (by 0.9383) Zero Point Vibrational Energy (zpe) 6924.9 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 MP3=FULL/6-31G*
ABC
0.96132 0.85180 0.49770

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.729
H2 0.925 0.000 1.307
H3 -0.925 0.000 1.307
O4 0.000 0.743 -0.437
O5 0.000 -0.743 -0.437

Atom - Atom Distances (Å)
  C1 H2 H3 O4 O5
C11.09081.09081.38261.3826
H21.09081.85042.10942.1094
H31.09081.85042.10942.1094
O41.38262.10942.10941.4851
O51.38262.10942.10941.4851

picture of Dioxirane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 O4 O5 57.516 C1 O5 O4 57.516
H2 C1 H3 116.027 H2 C1 O4 116.541
H2 C1 O5 116.541 H3 C1 O4 116.541
H3 C1 O5 116.541 O4 C1 O5 64.967
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability