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 CH3OO (methylperoxy radical)

using model chemistry: B3LYP/6-311G*

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/6-311G*
 hartrees
Energy at 0K-190.267726
Energy at 298.15K-190.271370
HF Energy-190.267726
Nuclear repulsion energy74.830011
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/6-311G*
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' 3163 3057 13.95      
2 A' 3056 2953 16.04      
3 A' 1501 1451 10.02      
4 A' 1457 1408 0.67      
5 A' 1226 1184 8.83      
6 A' 1158 1119 2.75      
7 A' 920 889 13.71      
8 A' 497 480 6.51      
9 A" 3147 3041 19.87      
10 A" 1488 1438 10.24      
11 A" 1142 1104 0.60      
12 A" 147 142 0.14      

Unscaled Zero Point Vibrational Energy (zpe) 9451.9 cm-1
Scaled (by 0.9663) Zero Point Vibrational Energy (zpe) 9133.4 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/6-311G*
ABC
1.75802 0.37711 0.33022

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/6-311G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.001 -0.478 0.000
O2 0.000 0.566 0.000
O3 -1.216 0.059 0.000
H4 1.960 0.039 0.000
H5 0.881 -1.086 0.897
H6 0.881 -1.086 -0.897

Atom - Atom Distances (Å)
  C1 O2 O3 H4 H5 H6
C11.44672.28181.08901.08991.0899
O21.44671.31782.02982.07582.0758
O32.28181.31783.17642.55202.5520
H41.08902.02983.17641.79801.7980
H51.08992.07582.55201.79801.7933
H61.08992.07582.55201.79801.7933

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 111.170 O2 C1 H4 105.484
O2 C1 H5 109.021 O2 C1 H6 109.021
H4 C1 H5 111.214 H4 C1 H6 111.214
H5 C1 H6 110.712
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/6-311G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.407      
2 O -0.113      
3 O -0.158      
4 H 0.221      
5 H 0.228      
6 H 0.228      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  2.483 -1.182 0.000 2.750
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -17.625 -0.433 0.000
y -0.433 -18.028 0.000
z 0.000 0.000 -16.906
Traceless
 xyz
x -0.158 -0.433 0.000
y -0.433 -0.762 0.000
z 0.000 0.000 0.920
Polar
3z2-r21.839
x2-y20.403
xy-0.433
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.191 0.009 0.000
y 0.009 2.477 0.000
z 0.000 0.000 2.292


<r2> (average value of r2) Å2
<r2> 42.118
(<r2>)1/2 6.490