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All results from a given calculation for CH2O2 (Dioxirane)

using model chemistry: QCISD/6-31G(2df,p)

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/6-31G(2df,p)
 hartrees
Energy at 0K-189.239044
Energy at 298.15K-189.241920
HF Energy-188.621991
Nuclear repulsion energy73.496839
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/6-31G(2df,p)
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 3122 2958 27.02      
2 A1 1582 1498 4.93      
3 A1 1337 1267 38.15      
4 A1 797 755 1.59      
5 A2 1049 994 0.00      
6 B1 3217 3048 28.78      
7 B1 1208 1144 8.26      
8 B2 1293 1225 2.31      
9 B2 947 897 18.91      

Unscaled Zero Point Vibrational Energy (zpe) 7275.4 cm-1
Scaled (by 0.9474) Zero Point Vibrational Energy (zpe) 6892.7 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 QCISD/6-31G(2df,p)
ABC
0.96892 0.85644 0.50125

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD/6-31G(2df,p)

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.726
H2 0.925 0.000 1.303
H3 -0.925 0.000 1.303
O4 0.000 0.739 -0.435
O5 0.000 -0.739 -0.435

Atom - Atom Distances (Å)
  C1 H2 H3 O4 O5
C11.08981.08981.37691.3769
H21.08981.84932.10322.1032
H31.08981.84932.10322.1032
O41.37692.10322.10321.4787
O51.37692.10322.10321.4787

picture of Dioxirane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 O4 O5 57.523 C1 O5 O4 57.523
H2 C1 H3 116.095 H2 C1 O4 116.516
H2 C1 O5 116.516 H3 C1 O4 116.516
H3 C1 O5 116.516 O4 C1 O5 64.953
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability