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 CH2Cl (chloromethyl radical)

using model chemistry: PBEPBE/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 no CS 2A'
1 2 yes C2V 2B1

Conformer 1 (CS)

Jump to S1C2
Energy calculated at PBEPBE/6-31G*
 hartrees
Energy at 0K-499.176340
Energy at 298.15K 
HF Energy-499.176340
Nuclear repulsion energy45.088779
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/6-31G*
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' 3138 3093 6.38      
2 A' 1396 1376 11.12      
3 A' 841 829 34.20      
4 A' 108 107 94.74      
5 A" 3283 3236 0.43      
6 A" 988 974 0.64      

Unscaled Zero Point Vibrational Energy (zpe) 4877.1 cm-1
Scaled (by 0.9857) Zero Point Vibrational Energy (zpe) 4807.4 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 PBEPBE/6-31G*
ABC
9.02588 0.52193 0.49340

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBEPBE/6-31G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 1.123 0.000
Cl2 0.000 -0.588 0.000
H3 -0.000 1.631 0.963
H4 -0.000 1.631 -0.963

Atom - Atom Distances (Å)
  C1 Cl2 H3 H4
C11.71111.08871.0887
Cl21.71112.41942.4194
H31.08872.41941.9252
H41.08872.41941.9252

picture of chloromethyl radical state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
Br2 C1 H3 117.851 Br2 C1 H4 117.851
H3 C1 H4 124.298
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.444      
2 Cl 0.029      
3 H 0.207      
4 H 0.207      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.000 1.098 0.000 1.098
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -20.245 -0.001 0.000
y -0.001 -17.077 0.000
z 0.000 0.000 -18.235
Traceless
 xyz
x -2.588 -0.001 0.000
y -0.001 2.163 0.000
z 0.000 0.000 0.426
Polar
3z2-r20.852
x2-y2-3.167
xy-0.001
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.533 -0.000 0.000
y -0.000 4.372 0.000
z 0.000 0.000 2.374


<r2> (average value of r2) Å2
<r2> 32.191
(<r2>)1/2 5.674

Conformer 2 (C2V)

Jump to S1C1
Energy calculated at PBEPBE/6-31G*
 hartrees
Energy at 0K-499.176340
Energy at 298.15K-499.177036
HF Energy-499.176340
Nuclear repulsion energy45.086456
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/6-31G*
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A1 3137 3093 6.38      
2 A1 1396 1376 11.12      
3 A1 841 829 34.21      
4 B1 109 107 94.75      
5 B2 3283 3236 0.43      
6 B2 988 974 0.64      

Unscaled Zero Point Vibrational Energy (zpe) 4877.2 cm-1
Scaled (by 0.9857) Zero Point Vibrational Energy (zpe) 4807.4 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 PBEPBE/6-31G*
ABC
9.02446 0.52187 0.49334

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBEPBE/6-31G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.123
Cl2 0.000 0.000 0.588
H3 0.000 0.963 -1.631
H4 0.000 -0.963 -1.631

Atom - Atom Distances (Å)
  C1 Cl2 H3 H4
C11.71121.08871.0887
Cl21.71122.41952.4195
H31.08872.41951.9254
H41.08872.41951.9254

picture of chloromethyl radical state 1 conformation 2
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
Br2 C1 H3 117.846 Br2 C1 H4 117.846
H3 C1 H4 124.308
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.444      
2 Cl 0.029      
3 H 0.207      
4 H 0.207      


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 -1.099 1.099
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -20.245 0.000 0.000
y 0.000 -18.235 0.000
z 0.000 0.000 -17.077
Traceless
 xyz
x -2.589 0.000 0.000
y 0.000 0.426 0.000
z 0.000 0.000 2.163
Polar
3z2-r24.325
x2-y2-2.010
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.533 0.000 0.000
y 0.000 2.374 0.000
z 0.000 0.000 4.372


<r2> (average value of r2) Å2
<r2> 32.193
(<r2>)1/2 5.674