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

using model chemistry: B3PW91/3-21G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 2A'
Energy calculated at B3PW91/3-21G*
 hartrees
Energy at 0K-188.454247
Energy at 298.15K-188.456762
HF Energy-188.454247
Nuclear repulsion energy67.735710
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 B3PW91/3-21G*
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' 3311 3177 1.24      
2 A' 3160 3032 2.51      
3 A' 1493 1432 9.12      
4 A' 1365 1309 19.92      
5 A' 1204 1155 8.38      
6 A' 946 908 36.29      
7 A' 479 460 0.34      
8 A" 908 871 67.43      
9 A" 638 612 3.93      

Unscaled Zero Point Vibrational Energy (zpe) 6752.7 cm-1
Scaled (by 0.9594) Zero Point Vibrational Energy (zpe) 6478.6 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 B3PW91/3-21G*
ABC
2.45147 0.38902 0.33574

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/3-21G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.491 0.000
C2 1.104 -0.175 0.000
H3 1.069 -1.257 0.000
H4 2.016 0.407 0.000
O5 -1.213 -0.254 0.000

Atom - Atom Distances (Å)
  O1 C2 H3 H4 O5
O11.28892.04952.01791.4239
C21.28891.08301.08202.3182
H32.04951.08301.91432.4933
H42.01791.08201.91433.2963
O51.42392.31822.49333.2963

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 119.300 O1 C2 H4 116.394
C2 O1 O5 117.328 H3 C2 H4 124.306
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/3-21G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.205      
2 C -0.056      
3 H 0.255      
4 H 0.255      
5 O -0.249      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  3.719 -0.494 0.000 3.752
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -15.550 -0.305 0.000
y -0.305 -16.222 0.000
z 0.000 0.000 -17.001
Traceless
 xyz
x 1.062 -0.305 0.000
y -0.305 0.054 0.000
z 0.000 0.000 -1.115
Polar
3z2-r2-2.231
x2-y20.672
xy-0.305
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.333 0.180 0.000
y 0.180 1.910 0.000
z 0.000 0.000 0.863


<r2> (average value of r2) Å2
<r2> 38.823
(<r2>)1/2 6.231