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: PBEPBEultrafine/3-21G

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 PBEPBEultrafine/3-21G
 hartrees
Energy at 0K-953.937986
Energy at 298.15K 
HF Energy-953.937986
Nuclear repulsion energy120.350851
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 PBEPBEultrafine/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 3245 3216 1.85      
2 A1 653 647 13.89      
3 A1 271 269 0.49      
4 B1 432i 428i 113.65      
5 B2 1147 1137 48.87      
6 B2 791 784 172.27      

Unscaled Zero Point Vibrational Energy (zpe) 2838.3 cm-1
Scaled (by 0.9909) Zero Point Vibrational Energy (zpe) 2812.5 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 PBEPBEultrafine/3-21G
ABC
1.41764 0.10215 0.09528

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.727
H2 0.000 0.000 1.811
Cl3 0.000 1.536 -0.182
Cl4 0.000 -1.536 -0.182

Atom - Atom Distances (Å)
  C1 H2 Cl3 Cl4
C11.08391.78461.7846
H21.08392.51572.5157
Cl31.78462.51573.0723
Cl41.78462.51573.0723

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 120.595 Cl3 C1 Cl4 118.810
Cl4 C1 H2 120.595
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBEultrafine/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.619      
2 H 0.301      
3 Cl 0.159      
4 Cl 0.159      


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 1.190 1.190
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -32.499 0.000 0.000
y 0.000 -32.087 0.000
z 0.000 0.000 -28.909
Traceless
 xyz
x -2.000 0.000 0.000
y 0.000 -1.383 0.000
z 0.000 0.000 3.384
Polar
3z2-r26.767
x2-y2-0.412
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.426 0.000 0.000
y 0.000 6.877 0.000
z 0.000 0.000 3.181


<r2> (average value of r2) Å2
<r2> 107.264
(<r2>)1/2 10.357

Conformer 2 (CS)

Jump to S1C1
Energy calculated at PBEPBEultrafine/3-21G
 hartrees
Energy at 0K-953.940197
Energy at 298.15K-953.940883
HF Energy-953.940197
Nuclear repulsion energy119.526079
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 PBEPBEultrafine/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' 3152 3124 1.91      
2 A' 700 694 35.89      
3 A' 516 512 16.68      
4 A' 268 265 0.34      
5 A" 1172 1162 28.42      
6 A" 732 726 206.84      

Unscaled Zero Point Vibrational Energy (zpe) 3270.6 cm-1
Scaled (by 0.9909) Zero Point Vibrational Energy (zpe) 3240.8 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 PBEPBEultrafine/3-21G
ABC
1.33104 0.10182 0.09495

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.016 0.774 0.000
H2 -0.652 1.638 0.000
Cl3 0.016 -0.185 1.537
Cl4 0.016 -0.185 -1.537

Atom - Atom Distances (Å)
  C1 H2 Cl3 Cl4
C11.09211.81121.8112
H21.09212.47572.4757
Cl31.81122.47573.0740
Cl41.81122.47573.0740

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 114.746 Cl3 C1 Cl4 116.119
Cl4 C1 H2 114.746
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBEultrafine/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.557      
2 H 0.300      
3 Cl 0.129      
4 Cl 0.129      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.909 1.023 0.000 1.368
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -31.928 -1.371 0.000
y -1.371 -29.875 0.000
z 0.000 0.000 -32.567
Traceless
 xyz
x -0.707 -1.371 0.000
y -1.371 2.373 0.000
z 0.000 0.000 -1.666
Polar
3z2-r2-3.331
x2-y2-2.053
xy-1.371
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.621 -0.266 0.000
y -0.266 3.266 0.000
z 0.000 0.000 7.132


<r2> (average value of r2) Å2
<r2> 107.835
(<r2>)1/2 10.384