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: B2PLYP/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 B2PLYP/6-31G
 hartrees
Energy at 0K-189.290489
Energy at 298.15K-189.292989
HF Energy-189.162016
Nuclear repulsion energy67.681043
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 B2PLYP/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' 3355 3355 1.15      
2 A' 3192 3192 7.08      
3 A' 1504 1504 11.32      
4 A' 1296 1296 62.77      
5 A' 1235 1235 8.50      
6 A' 826 826 114.59      
7 A' 494 494 0.31      
8 A" 917 917 55.40      
9 A" 646 646 3.78      

Unscaled Zero Point Vibrational Energy (zpe) 6732.3 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 6732.3 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 B2PLYP/6-31G
ABC
2.53670 0.38387 0.33341

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP/6-31G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.479 0.000
C2 1.113 -0.181 0.000
H3 1.085 -1.264 0.000
H4 2.013 0.417 0.000
O5 -1.222 -0.237 0.000

Atom - Atom Distances (Å)
  O1 C2 H3 H4 O5
O11.29422.05302.01391.4163
C21.29421.08321.08022.3362
H32.05301.08321.91972.5259
H42.01391.08021.91973.3006
O51.41632.33622.52593.3006

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 119.177 O1 C2 H4 115.734
C2 O1 O5 119.001 H3 C2 H4 125.089
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B2PLYP/6-31G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.159      
2 C 0.049      
3 H 0.196      
4 H 0.196      
5 O -0.282      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  4.196 -0.543 0.000 4.231
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -16.237 -0.437 0.000
y -0.437 -16.806 0.000
z 0.000 0.000 -17.332
Traceless
 xyz
x 0.832 -0.437 0.000
y -0.437 -0.021 0.000
z 0.000 0.000 -0.811
Polar
3z2-r2-1.621
x2-y20.569
xy-0.437
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.296 0.174 0.000
y 0.174 2.078 0.000
z 0.000 0.000 1.001


<r2> (average value of r2) Å2
<r2> 39.356
(<r2>)1/2 6.273