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 CHCl2 (dichloromethyl radical)

using model chemistry: G4

19 10 17 12 22

States and conformations

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

Conformer 1 (C2V)

Jump to S1C2
Energy calculated at G4
 hartrees
Energy at 0K-958.776041
Energy at 298.15K-958.771675
HF Energy-959.043739
Nuclear repulsion energy125.408005
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/6-31G(2df,p)
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 3266 3151 0.32      
2 A1 744 718 8.45      
3 A1 306 296 0.45      
4 B1 359i 346i 37.24      
5 B2 1222 1179 50.38      
6 B2 907 876 149.08      

Unscaled Zero Point Vibrational Energy (zpe) 3043.3 cm-1
Scaled (by 0.965) Zero Point Vibrational Energy (zpe) 2936.8 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/6-31G(2df,p)
ABC
1.61073 0.10996 0.10293

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/6-31G(2df,p)

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.672
H2 0.000 0.000 1.750
Cl3 0.000 1.481 -0.170
Cl4 0.000 -1.481 -0.170

Atom - Atom Distances (Å)
  C1 H2 Cl3 Cl4
C11.07821.70301.7030
H21.07822.42432.4243
Cl31.70302.42432.9612
Cl41.70302.42432.9612

picture of dichloromethyl radical state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
Cl3 C1 H2 119.632 Cl3 C1 Cl4 120.735
Cl4 C1 H2 119.632
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.076      
2 H 0.180      
3 Cl -0.052      
4 Cl -0.052      


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 0.967 0.967
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 0.000 0.000 0.000
y 0.000 0.000 0.000
z 0.000 0.000 0.000


<r2> (average value of r2) Å2
<r2> 100.184
(<r2>)1/2 10.009

Conformer 2 (CS)

Jump to S1C1
Energy calculated at G4
 hartrees
Energy at 0K-958.775654
Energy at 298.15K-958.776556
HF Energy-959.044497
Nuclear repulsion energy125.198519
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/6-31G(2df,p)
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' 3225 3112 1.33      
2 A' 753 727 13.63      
3 A' 472 456 20.92      
4 A' 300 290 0.52      
5 A" 1226 1184 42.16      
6 A" 874 844 172.99      

Unscaled Zero Point Vibrational Energy (zpe) 3425.4 cm-1
Scaled (by 0.965) Zero Point Vibrational Energy (zpe) 3305.5 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 B3LYP/6-31G(2df,p)
ABC
1.55438 0.11032 0.10323

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/6-31G(2df,p)

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.012 0.696 0.000
H2 -0.481 1.659 0.000
Cl3 0.012 -0.172 1.477
Cl4 0.012 -0.172 -1.477

Atom - Atom Distances (Å)
  C1 H2 Cl3 Cl4
C11.08171.71331.7133
H21.08172.40342.4034
Cl31.71332.40342.9546
Cl41.71332.40342.9546

picture of dichloromethyl radical state 1 conformation 2
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
Cl3 C1 H2 116.926 Cl3 C1 Cl4 119.248
Cl4 C1 H2 116.926
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.073      
2 H 0.181      
3 Cl -0.054      
4 Cl -0.054      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.441 0.878 0.000 0.983
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 0.000 0.000 0.000
y 0.000 0.000 0.000
z 0.000 0.000 0.000


<r2> (average value of r2) Å2
<r2> 100.059
(<r2>)1/2 10.003