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 CH3 (Methyl radical)

using model chemistry: wB97X-D/cc-pVDZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes D3H 2A1
Energy calculated at wB97X-D/cc-pVDZ
 hartrees
Energy at 0K-39.821878
Energy at 298.15K-39.823016
HF Energy-39.821878
Nuclear repulsion energy9.576758
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 wB97X-D/cc-pVDZ
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' 3120 2973 0.00 136.53 0.10 0.19
2 A2" 456 435 76.04 0.00 0.75 0.86
3 E' 3322 3165 2.46 39.24 0.75 0.86
3 E' 3322 3165 2.48 39.25 0.75 0.86
4 E' 1381 1315 3.81 3.14 0.75 0.86
4 E' 1381 1315 3.79 3.14 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 6491.2 cm-1
Scaled (by 0.9526) Zero Point Vibrational Energy (zpe) 6183.5 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 wB97X-D/cc-pVDZ
ABC
9.38016 9.38016 4.69008

See section I.F.4 to change rotational constant units
Geometric Data calculated at wB97X-D/cc-pVDZ

Point Group is D3h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.000
H2 0.000 1.090 0.000
H3 0.944 -0.545 0.000
H4 -0.944 -0.545 0.000

Atom - Atom Distances (Å)
  C1 H2 H3 H4
C11.09031.09031.0903
H21.09031.88851.8885
H31.09031.88851.8885
H41.09031.88851.8885

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
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at wB97X-D/cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.211      
2 H 0.070      
3 H 0.070      
4 H 0.070      


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 -7.047 0.000 0.000
y 0.000 -7.047 0.000
z 0.000 0.000 -8.692
Traceless
 xyz
x 0.822 0.000 0.000
y 0.000 0.822 0.000
z 0.000 0.000 -1.645
Polar
3z2-r2-3.289
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 1.846 0.000 0.000
y 0.000 1.846 0.000
z 0.000 0.000 1.015


<r2> (average value of r2) Å2
<r2> 8.310
(<r2>)1/2 2.883