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

using model chemistry: HF/CEP-31G

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/CEP-31G
 hartrees
Energy at 0K-38.427057
Energy at 298.15K-38.430735
HF Energy-38.427057
Nuclear repulsion energy42.860209
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/CEP-31G
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' 3388 3054 35.70      
2 A' 3255 2934 45.02      
3 A' 1636 1475 12.86      
4 A' 1587 1430 1.53      
5 A' 1299 1171 0.63      
6 A' 1151 1038 72.92      
7 A' 957 862 19.74      
8 A' 484 437 2.78      
9 A" 3366 3034 69.36      
10 A" 1617 1457 9.87      
11 A" 1256 1132 2.26      
12 A" 155 140 2.93      

Unscaled Zero Point Vibrational Energy (zpe) 10075.5 cm-1
Scaled (by 0.9014) Zero Point Vibrational Energy (zpe) 9082.0 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/CEP-31G
ABC
1.72705 0.36051 0.31626

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/CEP-31G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.032 -0.460 0.000
O2 0.000 0.570 0.000
O3 -1.255 0.031 0.000
H4 1.965 0.088 0.000
H5 0.941 -1.069 0.893
H6 0.941 -1.069 -0.893

Atom - Atom Distances (Å)
  C1 O2 O3 H4 H5 H6
C11.45802.33871.08281.08491.0849
O21.45801.36552.02372.09052.0905
O32.33871.36553.22072.61362.6136
H41.08282.02373.22071.78481.7848
H51.08492.09052.61361.78481.7870
H61.08492.09052.61361.78481.7870

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 111.802 O2 C1 H4 104.624
O2 C1 H5 109.721 O2 C1 H6 109.721
H4 C1 H5 110.853 H4 C1 H6 110.853
H5 C1 H6 110.885
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/CEP-31G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.214      
2 O -0.233      
3 O -0.053      
4 H 0.179      
5 H 0.160      
6 H 0.160      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  2.365 -1.894 0.000 3.030
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -17.104 -0.564 0.000
y -0.564 -18.804 0.000
z 0.000 0.000 -16.838
Traceless
 xyz
x 0.717 -0.564 0.000
y -0.564 -1.833 0.000
z 0.000 0.000 1.116
Polar
3z2-r22.231
x2-y21.700
xy-0.564
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.673 0.193 0.000
y 0.193 2.014 0.000
z 0.000 0.000 1.871


<r2> (average value of r2) Å2
<r2> 37.012
(<r2>)1/2 6.084