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: PM3

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description

Conformer 1 (CS)

Jump to S1C2
Energy calculated at PM3
 hartrees
Energy at 0K 
Energy at 298.15K0.028258
HF Energy0.028258
Nuclear repulsion energy31.056638
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 PM3
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' 3138 3057 3.35 82.71 0.15 0.26
2 A' 1294 1260 26.01 13.81 0.74 0.85
3 A' 804 783 77.34 0.32 0.69 0.81
4 A' 615 599 157.14 0.03 0.75 0.86
5 A" 3185 3102 13.23 49.82 0.75 0.86
6 A" 962 937 0.25 12.51 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 4998.8 cm-1
Scaled (by 0.974) Zero Point Vibrational Energy (zpe) 4868.8 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 PM3
ABC
9.71542 0.56961 0.53807

See section I.F.4 to change rotational constant units
Geometric Data calculated at PM3

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.000 1.059 0.000
Cl2 -0.000 -0.564 0.000
H3 0.002 1.619 0.928
H4 0.002 1.619 -0.928

Atom - Atom Distances (Å)
  C1 Cl2 H3 H4
C11.62361.08351.0835
Cl21.62362.37222.3722
H31.08352.37221.8556
H41.08352.37221.8556

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 121.099 Br2 C1 H4 121.099
H3 C1 H4 117.802
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (C2V)

Jump to S1C1
Energy calculated at PM3
 hartrees
Energy at 0K 
Energy at 298.15K0.028257
HF Energy0.028257
Nuclear repulsion energy31.056550
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 PM3
Rotational Constants (cm-1) from geometry optimized at PM3
ABC
9.71547 0.56959 0.53805

See section I.F.4 to change rotational constant units
Geometric Data calculated at PM3

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.059
Cl2 0.000 0.000 0.564
H3 0.000 0.928 -1.619
H4 0.000 -0.928 -1.619

Atom - Atom Distances (Å)
  C1 Cl2 H3 H4
C11.62361.08351.0835
Cl21.62362.37222.3722
H31.08352.37221.8556
H41.08352.37221.8556

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 121.097 Br2 C1 H4 121.097
H3 C1 H4 117.807
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability