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All results from a given calculation for CH2O2 (Dioxirane)

using model chemistry: MP2/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at MP2/3-21G
 hartrees
Energy at 0K-187.902980
Energy at 298.15K-187.905780
HF Energy-187.544456
Nuclear repulsion energy69.188321
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 MP2/3-21G
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 3166 3021 8.91      
2 A1 1629 1555 1.82      
3 A1 1128 1077 1.18      
4 A1 767 733 1.99      
5 A2 982 937 0.00      
6 B1 3274 3125 34.48      
7 B1 1175 1121 4.64      
8 B2 1257 1200 0.63      
9 B2 828 791 11.84      

Unscaled Zero Point Vibrational Energy (zpe) 7103.3 cm-1
Scaled (by 0.9545) Zero Point Vibrational Energy (zpe) 6780.1 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 MP2/3-21G
ABC
0.87183 0.74758 0.43858

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/3-21G

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.781
H2 0.925 0.000 1.346
H3 -0.925 0.000 1.346
O4 0.000 0.807 -0.461
O5 0.000 -0.807 -0.461

Atom - Atom Distances (Å)
  C1 H2 H3 O4 O5
C11.08391.08391.48091.4809
H21.08391.84992.18442.1844
H31.08391.84992.18442.1844
O41.48092.18442.18441.6137
O51.48092.18442.18441.6137

picture of Dioxirane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 O4 O5 56.987 C1 O5 O4 56.987
H2 C1 H3 117.147 H2 C1 O4 115.927
H2 C1 O5 115.927 H3 C1 O4 115.927
H3 C1 O5 115.927 O4 C1 O5 66.026
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability