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: B2PLYP=FULLultrafine/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 B2PLYP=FULLultrafine/3-21G
 hartrees
Energy at 0K-953.977311
Energy at 298.15K 
HF Energy-953.916166
Nuclear repulsion energy120.132278
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=FULLultrafine/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 3338 3338 2.33      
2 A1 651 651 14.63      
3 A1 273 273 0.77      
4 B1 480i 480i 97.85      
5 B2 1191 1191 66.75      
6 B2 801 801 145.18      

Unscaled Zero Point Vibrational Energy (zpe) 2887.0 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 2887.0 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=FULLultrafine/3-21G
ABC
1.41722 0.10166 0.09485

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.729
H2 0.000 0.000 1.802
Cl3 0.000 1.540 -0.182
Cl4 0.000 -1.540 -0.182

Atom - Atom Distances (Å)
  C1 H2 Cl3 Cl4
C11.07351.78871.7887
H21.07352.51122.5112
Cl31.78872.51123.0797
Cl41.78872.51123.0797

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 120.588 Cl3 C1 Cl4 118.824
Cl4 C1 H2 120.588
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (CS)

Jump to S1C1
Energy calculated at B2PLYP=FULLultrafine/3-21G
 hartrees
Energy at 0K-953.979625
Energy at 298.15K 
HF Energy-953.917977
Nuclear repulsion energy119.456999
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=FULLultrafine/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' 3271 3271 1.77      
2 A' 702 702 32.93      
3 A' 543 543 14.04      
4 A' 270 270 0.55      
5 A" 1218 1218 43.20      
6 A" 750 750 180.32      

Unscaled Zero Point Vibrational Energy (zpe) 3376.7 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 3376.7 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=FULLultrafine/3-21G
ABC
1.34084 0.10146 0.09464

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.015 0.770 0.000
H2 -0.614 1.647 0.000
Cl3 0.015 -0.184 1.540
Cl4 0.015 -0.184 -1.540

Atom - Atom Distances (Å)
  C1 H2 Cl3 Cl4
C11.07941.81171.8117
H21.07942.47402.4740
Cl31.81172.47403.0798
Cl41.81172.47403.0798

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 115.331 Cl3 C1 Cl4 116.421
Cl4 C1 H2 115.331
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability