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

using model chemistry: HF/CEP-121G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 2A'
Energy calculated at HF/CEP-121G
 hartrees
Energy at 0K-37.793182
Energy at 298.15K-37.795438
HF Energy-37.793182
Nuclear repulsion energy37.052035
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 HF/CEP-121G
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' 3371 3076 7.49      
2 A' 3233 2950 12.43      
3 A' 1827 1667 137.24      
4 A' 1590 1451 41.35      
5 A' 1342 1225 13.92      
6 A' 506 462 92.88      
7 A' 369 337 1.98      
8 A" 1307 1193 9.70      
9 A" 543 495 0.97      

Unscaled Zero Point Vibrational Energy (zpe) 7044.5 cm-1
Scaled (by 0.9125) Zero Point Vibrational Energy (zpe) 6428.1 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 HF/CEP-121G
ABC
2.35320 0.35451 0.30810

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/CEP-121G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.525 0.000
C2 1.118 0.019 0.000
H3 1.228 -1.057 0.000
H4 1.986 0.663 0.000
O5 -1.240 -0.491 0.000

Atom - Atom Distances (Å)
  O1 C2 H3 H4 O5
O11.22722.00301.99071.6033
C21.22721.08161.08062.4128
H32.00301.08161.87912.5328
H41.99071.08061.87913.4263
O51.60332.41282.53283.4263

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 120.218 O1 C2 H4 119.083
C2 O1 O5 116.319 H3 C2 H4 120.699
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/CEP-121G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.157      
2 C 0.081      
3 H 0.184      
4 H 0.178      
5 O -0.286      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  5.524 -0.296 0.000 5.532
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -14.844 -0.267 0.000
y -0.267 -17.359 0.000
z 0.000 0.000 -17.242
Traceless
 xyz
x 2.456 -0.267 0.000
y -0.267 -1.316 0.000
z 0.000 0.000 -1.140
Polar
3z2-r2-2.280
x2-y22.515
xy-0.267
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.603 0.440 0.000
y 0.440 2.319 0.000
z 0.000 0.000 1.140


<r2> (average value of r2) Å2
<r2> 34.635
(<r2>)1/2 5.885