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

using model chemistry: HF/CEP-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 HF/CEP-31G*
 hartrees
Energy at 0K-37.855860
Energy at 298.15K-37.858268
HF Energy-37.855860
Nuclear repulsion energy38.555279
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-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' 3443 3092 10.08      
2 A' 3312 2975 26.88      
3 A' 1920 1724 132.40      
4 A' 1585 1424 21.62      
5 A' 1340 1203 17.15      
6 A' 568 510 46.45      
7 A' 454 408 5.04      
8 A" 1293 1161 7.50      
9 A" 626 562 0.38      

Unscaled Zero Point Vibrational Energy (zpe) 7270.5 cm-1
Scaled (by 0.898) Zero Point Vibrational Energy (zpe) 6528.9 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 HF/CEP-31G*
ABC
2.40671 0.39868 0.34203

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.509 0.000
C2 1.068 -0.062 0.000
H3 1.103 -1.147 0.000
H4 1.973 0.539 0.000
O5 -1.185 -0.387 0.000

Atom - Atom Distances (Å)
  O1 C2 H3 H4 O5
O11.21071.98971.97301.4858
C21.21071.08591.08612.2761
H31.98971.08591.89712.4106
H41.97301.08611.89713.2907
O51.48582.27612.41063.2907

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 119.979 O1 C2 H4 118.311
C2 O1 O5 114.767 H3 C2 H4 121.710
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/CEP-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O 0.041      
2 C -0.068      
3 H 0.226      
4 H 0.210      
5 O -0.410      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  5.691 -0.156 0.000 5.693
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -15.351 -0.786 0.000
y -0.786 -16.670 0.000
z 0.000 0.000 -16.972
Traceless
 xyz
x 1.471 -0.786 0.000
y -0.786 -0.509 0.000
z 0.000 0.000 -0.962
Polar
3z2-r2-1.923
x2-y21.320
xy-0.786
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.362 0.345 0.000
y 0.345 2.184 0.000
z 0.000 0.000 1.294


<r2> (average value of r2) Å2
<r2> 32.369
(<r2>)1/2 5.689