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All results from a given calculation for CH2O2 (Dioxirane)

using model chemistry: QCISD/cc-pVDZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at QCISD/cc-pVDZ
 hartrees
Energy at 0K-189.146639
Energy at 298.15K-189.149499
HF Energy-188.616000
Nuclear repulsion energy72.975277
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 QCISD/cc-pVDZ
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 3106 2980 33.46      
2 A1 1564 1500 8.99      
3 A1 1327 1273 39.67      
4 A1 768 737 1.52      
5 A2 1034 992 0.00      
6 B1 3200 3070 44.79      
7 B1 1190 1142 11.64      
8 B2 1280 1228 0.92      
9 B2 937 899 19.65      

Unscaled Zero Point Vibrational Energy (zpe) 7203.0 cm-1
Scaled (by 0.9594) Zero Point Vibrational Energy (zpe) 6910.6 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 QCISD/cc-pVDZ
ABC
0.96193 0.83867 0.49403

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD/cc-pVDZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.727
H2 0.932 0.000 1.313
H3 -0.932 0.000 1.313
O4 0.000 0.757 -0.437
O5 0.000 -0.757 -0.437

Atom - Atom Distances (Å)
  C1 H2 H3 O4 O5
C11.10081.10081.38861.3886
H21.10081.86432.12202.1220
H31.10081.86432.12202.1220
O41.38862.12202.12201.5147
O51.38862.12202.12201.5147

picture of Dioxirane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 O4 O5 56.948 C1 O5 O4 56.948
H2 C1 H3 115.730 H2 C1 O4 116.477
H2 C1 O5 116.477 H3 C1 O4 116.477
H3 C1 O5 116.477 O4 C1 O5 66.104
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability