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: CCSD/aug-cc-pVQZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 no CS 2A'
1 2 yes C2V 2B1

Conformer 1 (CS)

Jump to S1C2
Energy calculated at CCSD/aug-cc-pVQZ
 hartrees
Energy at 0K-498.918888
Energy at 298.15K 
HF Energy-498.522486
Nuclear repulsion energy45.533298
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 CCSD/aug-cc-pVQZ
Rotational Constants (cm-1) from geometry optimized at CCSD/aug-cc-pVQZ
ABC
9.26766 0.53162 0.50278

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 1.113 0.000
Cl2 0.000 -0.583 0.000
H3 -0.000 1.614 0.950
H4 -0.000 1.614 -0.950

Atom - Atom Distances (Å)
  C1 Cl2 H3 H4
C11.69591.07411.0741
Cl21.69592.39382.3938
H31.07412.39381.8999
H41.07412.39381.8999

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 117.821 Br2 C1 H4 117.821
H3 C1 H4 124.357
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (C2V)

Jump to S1C1
Energy calculated at CCSD/aug-cc-pVQZ
 hartrees
Energy at 0K-498.918888
Energy at 298.15K 
HF Energy-498.522478
Nuclear repulsion energy45.545337
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 CCSD/aug-cc-pVQZ
Rotational Constants (cm-1) from geometry optimized at CCSD/aug-cc-pVQZ
ABC
9.27382 0.53192 0.50307

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.113
Cl2 0.000 0.000 0.583
H3 0.000 0.950 -1.615
H4 0.000 -0.950 -1.615

Atom - Atom Distances (Å)
  C1 Cl2 H3 H4
C11.69531.07421.0742
Cl21.69532.39382.3938
H31.07422.39381.8993
H41.07422.39381.8993

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 117.864 Br2 C1 H4 117.864
H3 C1 H4 124.272
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability