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: CCD/aug-cc-pVTZ

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 CCD/aug-cc-pVTZ
 hartrees
Energy at 0K-958.013475
Energy at 298.15K 
HF Energy-957.449306
Nuclear repulsion energy126.108704
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 CCD/aug-cc-pVTZ
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A1 3307 3165 0.95      
2 A1 768 735 7.25      
3 A1 313 299 0.43      
4 B1 416i 398i 33.65      
5 B2 1257 1203 57.63      
6 B2 953 912 117.00      

Unscaled Zero Point Vibrational Energy (zpe) 3090.9 cm-1
Scaled (by 0.957) Zero Point Vibrational Energy (zpe) 2958.0 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 CCD/aug-cc-pVTZ
ABC
1.60336 0.11158 0.10432

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCD/aug-cc-pVTZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.674
H2 0.000 0.000 1.747
Cl3 0.000 1.470 -0.170
Cl4 0.000 -1.470 -0.170

Atom - Atom Distances (Å)
  C1 H2 Cl3 Cl4
C11.07291.69531.6953
H21.07292.41612.4161
Cl31.69532.41612.9396
Cl41.69532.41612.9396

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 119.889 Cl3 C1 Cl4 120.222
Cl4 C1 H2 119.889
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (CS)

Jump to S1C1
Energy calculated at CCD/aug-cc-pVTZ
 hartrees
Energy at 0K-958.014503
Energy at 298.15K-958.015356
HF Energy-957.450926
Nuclear repulsion energy125.921641
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 CCD/aug-cc-pVTZ
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A' 3259 3119 0.68      
2 A' 777 743 12.42      
3 A' 530 508 17.75      
4 A' 308 295 0.43      
5 A" 1268 1214 46.11      
6 A" 922 882 139.71      

Unscaled Zero Point Vibrational Energy (zpe) 3531.8 cm-1
Scaled (by 0.957) Zero Point Vibrational Energy (zpe) 3380.0 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 CCD/aug-cc-pVTZ
ABC
1.54557 0.11204 0.10470

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCD/aug-cc-pVTZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.012 0.700 0.000
H2 -0.488 1.653 0.000
Cl3 0.012 -0.172 1.466
Cl4 0.012 -0.172 -1.466

Atom - Atom Distances (Å)
  C1 H2 Cl3 Cl4
C11.07691.70561.7056
H21.07692.39412.3941
Cl31.70562.39412.9317
Cl41.70562.39412.9317

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 116.916 Cl3 C1 Cl4 118.507
Cl4 C1 H2 116.916
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability