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

using model chemistry: PBEPBE/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 PBEPBE/3-21G
 hartrees
Energy at 0K-188.968317
Energy at 298.15K-188.971826
HF Energy-188.968317
Nuclear repulsion energy71.524267
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 PBEPBE/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' 3100 3072 10.37      
2 A' 2998 2971 10.40      
3 A' 1500 1486 8.83      
4 A' 1395 1382 1.77      
5 A' 1117 1107 1.00      
6 A' 1055 1045 3.76      
7 A' 823 815 2.79      
8 A' 431 427 6.66      
9 A" 3098 3070 14.91      
10 A" 1486 1473 10.13      
11 A" 1060 1050 0.21      
12 A" 137 135 0.17      

Unscaled Zero Point Vibrational Energy (zpe) 9098.9 cm-1
Scaled (by 0.9909) Zero Point Vibrational Energy (zpe) 9016.1 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 PBEPBE/3-21G
ABC
1.48802 0.35688 0.30503

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.045 -0.455 0.000
O2 0.000 0.628 0.000
O3 -1.266 -0.028 0.000
H4 2.010 0.073 0.000
H5 0.925 -1.069 0.905
H6 0.925 -1.069 -0.905

Atom - Atom Distances (Å)
  C1 O2 O3 H4 H5 H6
C11.50522.35061.10051.09971.0997
O21.50521.42612.08532.13382.1338
O32.35061.42613.27812.58912.5891
H41.10052.08533.27811.81691.8169
H51.09972.13382.58911.81691.8094
H61.09972.13382.58911.81691.8094

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 106.591 O2 C1 H4 105.258
O2 C1 H5 109.007 O2 C1 H6 109.007
H4 C1 H5 111.334 H4 C1 H6 111.334
H5 C1 H6 110.712
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.398      
2 O -0.176      
3 O -0.130      
4 H 0.228      
5 H 0.238      
6 H 0.238      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  2.334 -1.223 0.000 2.635
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -16.872 -0.432 0.000
y -0.432 -17.620 0.000
z 0.000 0.000 -16.617
Traceless
 xyz
x 0.246 -0.432 0.000
y -0.432 -0.876 0.000
z 0.000 0.000 0.629
Polar
3z2-r21.259
x2-y20.748
xy-0.432
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.012 0.117 0.000
y 0.117 2.124 0.000
z 0.000 0.000 1.910


<r2> (average value of r2) Å2
<r2> 44.106
(<r2>)1/2 6.641