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All results from a given calculation for H2COO (Dioxymethyl radical)

using model chemistry: QCISD/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 2A'
Energy calculated at QCISD/6-31G*
 hartrees
Energy at 0K-189.071472
Energy at 298.15K-189.074009
HF Energy-188.547774
Nuclear repulsion energy69.153656
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*
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' 3336 3177 0.27      
2 A' 3185 3033 0.53      
3 A' 1521 1449 12.82      
4 A' 1381 1315 11.14      
5 A' 1241 1182 20.17      
6 A' 1005 957 6.51      
7 A' 529 504 4.27      
8 A" 861 820 34.68      
9 A" 616 586 2.48      

Unscaled Zero Point Vibrational Energy (zpe) 6837.2 cm-1
Scaled (by 0.9523) Zero Point Vibrational Energy (zpe) 6511.0 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/6-31G*
ABC
2.47113 0.41135 0.35265

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD/6-31G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.487 0.000
C2 1.075 -0.213 0.000
H3 0.992 -1.296 0.000
H4 2.000 0.354 0.000
O5 -1.180 -0.209 0.000

Atom - Atom Distances (Å)
  O1 C2 H3 H4 O5
O11.28242.04082.00391.3701
C21.28241.08671.08492.2549
H32.04081.08671.93372.4294
H42.00391.08491.93373.2292
O51.37012.25492.42943.2292

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 118.719 O1 C2 H4 115.413
C2 O1 O5 116.405 H3 C2 H4 125.867
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability