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: B3LYP/aug-cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 2A'
Energy calculated at B3LYP/aug-cc-pVTZ
 hartrees
Energy at 0K-189.662593
Energy at 298.15K-189.665183
HF Energy-189.662593
Nuclear repulsion energy70.047586
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 B3LYP/aug-cc-pVTZ
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' 3268 3162 0.49      
2 A' 3118 3017 3.10      
3 A' 1544 1494 30.58      
4 A' 1402 1357 16.41      
5 A' 1242 1202 18.01      
6 A' 913 883 105.76      
7 A' 528 511 0.09      
8 A" 951 920 30.70      
9 A" 674 652 4.55      

Unscaled Zero Point Vibrational Energy (zpe) 6819.8 cm-1
Scaled (by 0.9675) Zero Point Vibrational Energy (zpe) 6598.1 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 B3LYP/aug-cc-pVTZ
ABC
2.69531 0.41367 0.35863

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/aug-cc-pVTZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.459 0.000
C2 1.070 -0.195 0.000
H3 1.030 -1.277 0.000
H4 1.974 0.397 0.000
O5 -1.178 -0.203 0.000

Atom - Atom Distances (Å)
  O1 C2 H3 H4 O5
O11.25382.01911.97521.3515
C21.25381.08321.08062.2477
H32.01911.08321.92152.4556
H41.97521.08061.92153.2087
O51.35152.24772.45563.2087

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 119.357 O1 C2 H4 115.392
C2 O1 O5 119.205 H3 C2 H4 125.251
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/aug-cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O 0.048      
2 C -0.429      
3 H 0.424      
4 H 0.424      
5 O -0.468      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  4.298 -0.327 0.000 4.311
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -16.867 -0.589 0.000
y -0.589 -16.787 0.000
z 0.000 0.000 -17.592
Traceless
 xyz
x 0.323 -0.589 0.000
y -0.589 0.443 0.000
z 0.000 0.000 -0.765
Polar
3z2-r2-1.531
x2-y2-0.080
xy-0.589
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.817 -0.004 0.000
y -0.004 3.239 0.000
z 0.000 0.000 2.595


<r2> (average value of r2) Å2
<r2> 37.628
(<r2>)1/2 6.134