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All results from a given calculation for CH2O2 (Dioxirane)

using model chemistry: CISD/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 CISD/3-21G
 hartrees
Energy at 0K-187.877891
Energy at 298.15K-187.880716
Nuclear repulsion energy70.289509
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 CISD/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 3199 3011 6.97      
2 A1 1638 1542 1.88      
3 A1 1215 1144 6.94      
4 A1 815 767 1.23      
5 A2 1027 967 0.00      
6 B1 3301 3107 28.59      
7 B1 1190 1120 6.80      
8 B2 1266 1192 6.70      
9 B2 797 750 5.33      

Unscaled Zero Point Vibrational Energy (zpe) 7223.3 cm-1
Scaled (by 0.9413) Zero Point Vibrational Energy (zpe) 6799.3 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 CISD/3-21G
ABC
0.88857 0.78132 0.45418

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.772
H2 0.923 0.000 1.335
H3 -0.923 0.000 1.335
O4 0.000 0.788 -0.456
O5 0.000 -0.788 -0.456

Atom - Atom Distances (Å)
  C1 H2 H3 O4 O5
C11.08101.08101.45931.4593
H21.08101.84502.16392.1639
H31.08101.84502.16392.1639
O41.45932.16392.16391.5759
O51.45932.16392.16391.5759

picture of Dioxirane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 O4 O5 57.321 C1 O5 O4 57.321
H2 C1 H3 117.167 H2 C1 O4 116.024
H2 C1 O5 116.024 H3 C1 O4 116.024
H3 C1 O5 116.024 O4 C1 O5 65.358
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability