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: CCD/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 CCD/6-31G*
 hartrees
Energy at 0K-189.048354
Energy at 298.15K-189.050934
HF Energy-188.551378
Nuclear repulsion energy70.163590
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 CCD/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' 3343 3164 0.25      
2 A' 3193 3022 5.03      
3 A' 1595 1510 46.75      
4 A' 1439 1362 24.18      
5 A' 1271 1203 26.19      
6 A' 833 788 280.39      
7 A' 531 502 6.32      
8 A" 971 919 38.37      
9 A" 713 675 1.66      

Unscaled Zero Point Vibrational Energy (zpe) 6943.6 cm-1
Scaled (by 0.9465) Zero Point Vibrational Energy (zpe) 6572.1 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 CCD/6-31G*
ABC
2.66061 0.41755 0.36091

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.464 0.000
C2 1.065 -0.200 0.000
H3 1.004 -1.285 0.000
H4 1.982 0.379 0.000
O5 -1.172 -0.200 0.000

Atom - Atom Distances (Å)
  O1 C2 H3 H4 O5
O11.25482.01641.98391.3469
C21.25481.08661.08462.2367
H32.01641.08661.92972.4314
H41.98391.08461.92973.2067
O51.34692.23672.43143.2067

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 118.734 O1 C2 H4 115.815
C2 O1 O5 118.533 H3 C2 H4 125.451
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability