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All results from a given calculation for CH3 (Methyl radical)

using model chemistry: B3LYP/CEP-121G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes D3H 2A1
Energy calculated at B3LYP/CEP-121G
 hartrees
Energy at 0K-7.381384
Energy at 298.15K-7.382600
HF Energy-7.381384
Nuclear repulsion energy6.682900
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/CEP-121G
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A1' 3042 2964 0.00 144.41 0.14 0.25
2 A2" 554 540 124.08 0.00 0.75 0.86
3 E' 3250 3167 19.23 34.91 0.75 0.86
3 E' 3250 3167 19.23 34.91 0.75 0.86
4 E' 1401 1365 5.30 2.38 0.75 0.86
4 E' 1401 1365 5.30 2.38 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 6449.1 cm-1
Scaled (by 0.9745) Zero Point Vibrational Energy (zpe) 6284.7 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/CEP-121G
ABC
9.43142 9.43142 4.71571

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/CEP-121G

Point Group is D3h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.000
H2 0.000 1.087 0.000
H3 0.942 -0.544 0.000
H4 -0.942 -0.544 0.000

Atom - Atom Distances (Å)
  C1 H2 H3 H4
C11.08741.08741.0874
H21.08741.88341.8834
H31.08741.88341.8834
H41.08741.88341.8834

picture of Methyl radical state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
H2 C1 H3 120.000 H2 C1 H4 120.000
H3 C1 H4 120.000
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/CEP-121G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.440      
2 H 0.147      
3 H 0.147      
4 H 0.147      


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


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -7.206 0.000 0.000
y 0.000 -7.206 0.000
z 0.000 0.000 -9.128
Traceless
 xyz
x 0.961 0.000 0.000
y 0.000 0.961 0.000
z 0.000 0.000 -1.922
Polar
3z2-r2-3.845
x2-y20.000
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.913 0.000 0.000
y 0.000 1.913 0.000
z 0.000 0.000 1.145


<r2> (average value of r2) Å2
<r2> 8.448
(<r2>)1/2 2.907