return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

All results from a given calculation for CH2O2 (Dioxirane)

using model chemistry: TPSSh/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 TPSSh/6-31G(2df,p)
 hartrees
Energy at 0K-189.642027
Energy at 298.15K-189.644898
HF Energy-189.642027
Nuclear repulsion energy73.352099
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 TPSSh/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 3053 2946 34.33      
2 A1 1557 1502 4.85      
3 A1 1316 1270 39.12      
4 A1 840 810 2.13      
5 A2 1017 981 0.00      
6 B1 3148 3038 39.30      
7 B1 1181 1140 7.97      
8 B2 1252 1208 2.45      
9 B2 926 893 18.65      

Unscaled Zero Point Vibrational Energy (zpe) 7143.9 cm-1
Scaled (by 0.965) Zero Point Vibrational Energy (zpe) 6893.9 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 TPSSh/6-31G(2df,p)
ABC
0.95740 0.85968 0.49958

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.729
H2 0.927 0.000 1.308
H3 -0.927 0.000 1.308
O4 0.000 0.739 -0.437
O5 0.000 -0.739 -0.437

Atom - Atom Distances (Å)
  C1 H2 H3 O4 O5
C11.09291.09291.38111.3811
H21.09291.85402.11012.1101
H31.09291.85402.11012.1101
O41.38112.11012.11011.4783
O51.38112.11012.11011.4783

picture of Dioxirane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 O4 O5 57.641 C1 O5 O4 57.641
H2 C1 H3 116.028 H2 C1 O4 116.581
H2 C1 O5 116.581 H3 C1 O4 116.581
H3 C1 O5 116.581 O4 C1 O5 64.718
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability