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 H2COO (Dioxymethyl radical)

using model chemistry: CBS-Q

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 2A'
Energy calculated at CBS-Q
 hartrees
Energy at 0K-189.338833
Energy at 298.15K-189.334255
HF Energy-188.556102
Nuclear repulsion energy68.496261
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 CBS-Q
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A' 3406 3406 3.30      
2 A' 3277 3277 15.67      
3 A' 1936 1936 134.78      
4 A' 1596 1596 20.87      
5 A' 1355 1355 18.40      
6 A' 462 462 53.56      
7 A' 446 446 11.87      
8 A" 1303 1303 4.35      
9 A" 622 622 0.24      

Unscaled Zero Point Vibrational Energy (zpe) 7201.7 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 7201.7 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 CBS-Q
ABC
2.79489 0.41964 0.36486

See section I.F.4 to change rotational constant units
Geometric Data calculated at CBS-Q

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.508 0.000
C2 1.060 -0.049 0.000
H3 1.099 -1.130 0.000
H4 1.959 0.554 0.000
O5 -1.177 -0.399 0.000

Atom - Atom Distances (Å)
  O1 C2 H3 H4 O5
O11.19691.97221.95941.4860
C21.19691.08161.08252.2638
H31.97221.08161.89032.3902
H41.95941.08251.89033.2774
O51.48602.26382.39023.2774

picture of Dioxymethyl radical state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 C2 H3 119.808 O1 C2 H4 118.466
C2 O1 O5 114.651 H3 C2 H4 121.726
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability