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: B2PLYP/3-21G*

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 B2PLYP/3-21G*
 hartrees
Energy at 0K-496.909825
Energy at 298.15K 
HF Energy-496.841427
Nuclear repulsion energy45.045199
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 B2PLYP/3-21G*
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' 3223 3223 4.82 88.31 0.12 0.22
2 A' 1478 1478 11.94 4.33 0.62 0.76
3 A' 809 809 37.04 7.25 0.31 0.47
4 A' 186 186 109.18 0.67 0.75 0.86
5 A" 3376 3376 0.18 46.32 0.75 0.86
6 A" 1033 1033 0.47 5.98 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 5052.1 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 5052.1 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 B2PLYP/3-21G*
ABC
9.23781 0.51866 0.49109

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP/3-21G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 1.128 0.000
Cl2 0.000 -0.590 0.000
H3 -0.000 1.631 0.951
H4 -0.000 1.631 -0.951

Atom - Atom Distances (Å)
  C1 Cl2 H3 H4
C11.71791.07631.0763
Cl21.71792.41622.4162
H31.07632.41621.9030
H41.07632.41621.9030

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 117.866 Br2 C1 H4 117.866
H3 C1 H4 124.268
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B2PLYP/3-21G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.466      
2 Cl -0.000      
3 H 0.233      
4 H 0.233      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.000 1.275 0.000 1.275
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -20.499 -0.001 0.000
y -0.001 -17.211 -0.010
z 0.000 -0.010 -18.501
Traceless
 xyz
x -2.643 -0.001 0.000
y -0.001 2.289 -0.010
z 0.000 -0.010 0.353
Polar
3z2-r20.707
x2-y2-3.288
xy-0.001
xz0.000
yz-0.010


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.264 -0.000 0.000
y -0.000 4.048 0.001
z 0.000 0.001 2.149


<r2> (average value of r2) Å2
<r2> 32.383
(<r2>)1/2 5.691

Conformer 2 (C2V)

Jump to S1C1
Energy calculated at B2PLYP/3-21G*
 hartrees
Energy at 0K-496.909825
Energy at 298.15K 
HF Energy-496.841426
Nuclear repulsion energy45.046768
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 B2PLYP/3-21G*
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 3222 3222 4.83 88.36 0.12 0.22
2 A1 1478 1478 11.94      
3 A1 809 809 36.98      
4 B1 190 190 109.11      
5 B2 3375 3375 0.19      
6 B2 1033 1033 0.47      

Unscaled Zero Point Vibrational Energy (zpe) 5053.6 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 5053.6 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 B2PLYP/3-21G*
ABC
9.24399 0.51867 0.49112

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP/3-21G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.128
Cl2 0.000 0.000 0.590
H3 0.000 0.951 -1.632
H4 0.000 -0.951 -1.632

Atom - Atom Distances (Å)
  C1 Cl2 H3 H4
C11.71771.07641.0764
Cl21.71772.41652.4165
H31.07642.41651.9024
H41.07642.41651.9024

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 117.908 Br2 C1 H4 117.908
H3 C1 H4 124.184
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B2PLYP/3-21G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.466      
2 Cl -0.000      
3 H 0.233      
4 H 0.233      


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 -1.274 1.274
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -20.497 0.000 0.000
y 0.000 -18.507 0.000
z 0.000 0.000 -17.220
Traceless
 xyz
x -2.634 0.000 0.000
y 0.000 0.351 0.000
z 0.000 0.000 2.282
Polar
3z2-r24.565
x2-y2-1.990
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.264 0.000 0.000
y 0.000 2.151 0.000
z 0.000 0.000 4.053


<r2> (average value of r2) Å2
<r2> 32.383
(<r2>)1/2 5.691