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All results from a given calculation for CH2O2 (Dioxirane)

using model chemistry: MP2/SDD

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/SDD
 hartrees
Energy at 0K-188.900493
Energy at 298.15K-188.903243
HF Energy-188.537170
Nuclear repulsion energy68.711139
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/SDD
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 3133 3024 29.88      
2 A1 1536 1483 0.38      
3 A1 1101 1062 8.67      
4 A1 682 659 0.46      
5 A2 964 931 0.00      
6 B1 3267 3154 29.49      
7 B1 1130 1091 4.20      
8 B2 1250 1207 0.31      
9 B2 852 822 35.98      

Unscaled Zero Point Vibrational Energy (zpe) 6957.0 cm-1
Scaled (by 0.9653) Zero Point Vibrational Energy (zpe) 6715.6 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/SDD
ABC
0.87562 0.72438 0.43261

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/SDD

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.778
H2 0.939 0.000 1.338
H3 -0.939 0.000 1.338
O4 0.000 0.820 -0.459
O5 0.000 -0.820 -0.459

Atom - Atom Distances (Å)
  C1 H2 H3 O4 O5
C11.09351.09351.48441.4844
H21.09351.87862.18752.1875
H31.09351.87862.18752.1875
O41.48442.18752.18751.6394
O51.48442.18752.18751.6394

picture of Dioxirane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 O4 O5 56.483 C1 O5 O4 56.483
H2 C1 H3 118.401 H2 C1 O4 115.271
H2 C1 O5 115.271 H3 C1 O4 115.271
H3 C1 O5 115.271 O4 C1 O5 67.035
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability