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: MP2/cc-pVTZ

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 MP2/cc-pVTZ
 hartrees
Energy at 0K-498.851644
Energy at 298.15K 
HF Energy-498.515241
Nuclear repulsion energy45.585698
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 MP2/cc-pVTZ
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' 3238 3074 6.90      
2 A' 1454 1380 11.76      
3 A' 873 829 35.98      
4 A' 132 125 68.84      
5 A" 3394 3222 0.44      
6 A" 1020 968 0.07      

Unscaled Zero Point Vibrational Energy (zpe) 5055.0 cm-1
Scaled (by 0.9495) Zero Point Vibrational Energy (zpe) 4799.7 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 MP2/cc-pVTZ
ABC
9.29029 0.53275 0.50401

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/cc-pVTZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.005 1.112 0.000
Cl2 -0.005 -0.582 0.000
H3 0.052 1.612 0.947
H4 0.052 1.612 -0.947

Atom - Atom Distances (Å)
  C1 Cl2 H3 H4
C11.69411.07281.0728
Cl21.69412.39062.3906
H31.07282.39061.8950
H41.07282.39061.8950

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 117.779 Br2 C1 H4 117.779
H3 C1 H4 124.054
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (C2V)

Jump to S1C1
Energy calculated at MP2/cc-pVTZ
 hartrees
Energy at 0K-498.851642
Energy at 298.15K 
HF Energy-498.515205
Nuclear repulsion energy45.594516
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 MP2/cc-pVTZ
Rotational Constants (cm-1) from geometry optimized at MP2/cc-pVTZ
ABC
9.30302 0.53299 0.50411

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/cc-pVTZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.112
Cl2 0.000 0.000 0.582
H3 0.000 0.948 -1.613
H4 0.000 -0.948 -1.613

Atom - Atom Distances (Å)
  C1 Cl2 H3 H4
C11.69361.07261.0726
Cl21.69362.39112.3911
H31.07262.39111.8963
H41.07262.39111.8963

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 117.876 Br2 C1 H4 117.876
H3 C1 H4 124.248
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability