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All results from a given calculation for CH2O2 (Dioxirane)

using model chemistry: QCISD/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 QCISD/3-21G*
 hartrees
Energy at 0K-187.915328
Energy at 298.15K-187.918084
HF Energy-187.545248
Nuclear repulsion energy69.363752
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/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 3114 2993 9.50      
2 A1 1607 1544 2.35      
3 A1 1139 1095 3.73      
4 A1 733 705 0.97      
5 A2 984 946 0.00      
6 B1 3210 3085 34.36      
7 B1 1161 1116 5.37      
8 B2 1226 1178 5.44      
9 B2 757 727 3.72      

Unscaled Zero Point Vibrational Energy (zpe) 6965.0 cm-1
Scaled (by 0.9611) Zero Point Vibrational Energy (zpe) 6694.0 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/3-21G*
ABC
0.87663 0.75129 0.44126

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.777
H2 0.927 0.000 1.346
H3 -0.927 0.000 1.346
O4 0.000 0.805 -0.460
O5 0.000 -0.805 -0.460

Atom - Atom Distances (Å)
  C1 H2 H3 O4 O5
C11.08771.08771.47521.4752
H21.08771.85422.18322.1832
H31.08771.85422.18322.1832
O41.47522.18322.18321.6090
O51.47522.18322.18321.6090

picture of Dioxirane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 O4 O5 56.951 C1 O5 O4 56.951
H2 C1 H3 116.936 H2 C1 O4 115.999
H2 C1 O5 115.999 H3 C1 O4 115.999
H3 C1 O5 115.999 O4 C1 O5 66.097
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability