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: TPSSh/STO-3G

19 10 17 12 22

States and conformations

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

Conformer 1 (CS)

Jump to S1C2
Energy calculated at TPSSh/STO-3G
 hartrees
Energy at 0K-493.979411
Energy at 298.15K 
HF Energy-493.979411
Nuclear repulsion energy43.608914
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 TPSSh/STO-3G
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' 3352 3352 2.39 40.87 0.14 0.25
2 A' 1508 1508 20.25 8.36 0.75 0.86
3 A' 887 887 36.34 7.98 0.34 0.50
4 A' 652 652 18.59 1.62 0.17 0.29
5 A" 3554 3554 0.19 24.74 0.75 0.86
6 A" 1046 1046 2.51 6.19 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 5499.6 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 5499.6 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 TPSSh/STO-3G
ABC
8.50286 0.48432 0.46181

See section I.F.4 to change rotational constant units
Geometric Data calculated at TPSSh/STO-3G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.024 1.177 0.000
Cl2 -0.024 -0.608 0.000
H3 0.276 1.636 0.955
H4 0.276 1.636 -0.955

Atom - Atom Distances (Å)
  C1 Cl2 H3 H4
C11.78471.10151.1015
Cl21.78472.45682.4568
H31.10152.45681.9106
H41.10152.45681.9106

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 114.614 Br2 C1 H4 114.614
H3 C1 H4 120.295
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at TPSSh/STO-3G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.083      
2 Cl -0.112      
3 H 0.098      
4 H 0.098      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.400 1.631 0.000 1.680
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 0.399 0.109 0.000
y 0.109 2.470 0.000
z 0.000 0.000 0.905


<r2> (average value of r2) Å2
<r2> 32.777
(<r2>)1/2 5.725

Conformer 2 (C2V)

Jump to S1C1
Energy calculated at TPSSh/STO-3G
 hartrees
Energy at 0K-493.978222
Energy at 298.15K 
HF Energy-493.978222
Nuclear repulsion energy43.731429
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 TPSSh/STO-3G
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 3387 3387 3.38 38.42 0.14 0.25
2 A1 1490 1490 26.87      
3 A1 898 898 32.67      
4 B1 499i 499i 46.80      
5 B2 3601 3601 2.13      
6 B2 1009 1009 2.31      

Unscaled Zero Point Vibrational Energy (zpe) 4943.4 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 4943.4 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 TPSSh/STO-3G
ABC
8.85120 0.48720 0.46178

See section I.F.4 to change rotational constant units
Geometric Data calculated at TPSSh/STO-3G

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.166
Cl2 0.000 0.000 0.608
H3 0.000 0.972 -1.674
H4 0.000 -0.972 -1.674

Atom - Atom Distances (Å)
  C1 Cl2 H3 H4
C11.77471.09651.0965
Cl21.77472.48052.4805
H31.09652.48051.9441
H41.09652.48051.9441

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 117.566 Br2 C1 H4 117.566
H3 C1 H4 124.869
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at TPSSh/STO-3G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.096      
2 Cl -0.106      
3 H 0.101      
4 H 0.101      


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 -1.643 1.643
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 0.364 0.000 0.000
y 0.000 0.902 0.000
z 0.000 0.000 2.421


<r2> (average value of r2) Å2
<r2> 32.752
(<r2>)1/2 5.723