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All results from a given calculation for CH2O2 (Dioxirane)

using model chemistry: MP2/CEP-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 MP2/CEP-31G
 hartrees
Energy at 0K-38.118120
Energy at 298.15K-38.120869
HF Energy-37.788662
Nuclear repulsion energy38.585620
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/CEP-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 3135 3030 39.06      
2 A1 1529 1478 0.49      
3 A1 1114 1077 7.53      
4 A1 673 650 0.39      
5 A2 963 931 0.00      
6 B1 3276 3166 47.06      
7 B1 1127 1089 4.73      
8 B2 1244 1202 0.28      
9 B2 861 832 34.64      

Unscaled Zero Point Vibrational Energy (zpe) 6961.3 cm-1
Scaled (by 0.9663) Zero Point Vibrational Energy (zpe) 6726.7 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/CEP-31G
ABC
0.86909 0.72215 0.43076

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/CEP-31G

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.781
H2 0.946 0.000 1.343
H3 -0.946 0.000 1.343
O4 0.000 0.821 -0.461
O5 0.000 -0.821 -0.461

Atom - Atom Distances (Å)
  C1 H2 H3 O4 O5
C11.09981.09981.48861.4886
H21.09981.89152.19542.1954
H31.09981.89152.19542.1954
O41.48862.19542.19541.6412
O51.48862.19542.19541.6412

picture of Dioxirane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 O4 O5 56.546 C1 O5 O4 56.546
H2 C1 H3 118.616 H2 C1 O4 115.205
H2 C1 O5 115.205 H3 C1 O4 115.205
H3 C1 O5 115.205 O4 C1 O5 66.907
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability