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All results from a given calculation for CH3OO (methylperoxy radical)

using model chemistry: HF/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 HF/3-21G
 hartrees
Energy at 0K-188.170255
Energy at 298.15K-188.173909
HF Energy-188.170255
Nuclear repulsion energy72.369550
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/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' 3323 3009 13.27      
2 A' 3236 2930 16.41      
3 A' 1682 1523 8.09      
4 A' 1599 1448 4.24      
5 A' 1285 1164 0.20      
6 A' 1055 956 48.02      
7 A' 763 691 1.94      
8 A' 464 420 3.29      
9 A" 3319 3005 30.22      
10 A" 1659 1502 6.77      
11 A" 1249 1131 0.74      
12 A" 189 172 2.54      

Unscaled Zero Point Vibrational Energy (zpe) 9911.2 cm-1
Scaled (by 0.9056) Zero Point Vibrational Energy (zpe) 8975.6 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 HF/3-21G
ABC
1.55681 0.36207 0.31092

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.040 -0.416 0.000
O2 0.000 0.610 0.000
O3 -1.266 -0.059 0.000
H4 1.968 0.134 0.000
H5 0.961 -1.024 0.887
H6 0.961 -1.024 -0.887

Atom - Atom Distances (Å)
  C1 O2 O3 H4 H5 H6
C11.46062.33411.07861.07821.0782
O21.46061.43212.02482.09232.0923
O32.33411.43213.24042.58412.5841
H41.07862.02483.24041.77271.7727
H51.07822.09232.58411.77271.7735
H61.07822.09232.58411.77271.7735

picture of methylperoxy radical state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 O2 O3 107.582 O2 C1 H4 104.762
O2 C1 H5 110.087 O2 C1 H6 110.087
H4 C1 H5 110.553 H4 C1 H6 110.553
H5 C1 H6 110.650
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.272      
2 O -0.364      
3 O -0.032      
4 H 0.231      
5 H 0.219      
6 H 0.219      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  2.048 -1.647 0.000 2.628
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -16.270 -0.440 0.000
y -0.440 -18.351 0.000
z 0.000 0.000 -16.802
Traceless
 xyz
x 1.307 -0.440 0.000
y -0.440 -1.815 0.000
z 0.000 0.000 0.508
Polar
3z2-r21.017
x2-y22.081
xy-0.440
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.482 0.269 0.000
y 0.269 1.964 0.000
z 0.000 0.000 1.860


<r2> (average value of r2) Å2
<r2> 43.475
(<r2>)1/2 6.594