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All results from a given calculation for CH2Br (bromomethyl radical)

using model chemistry: CCSD/cc-pVTZ

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 2A1

Conformer 1 (CS)

Jump to S1C2
Energy calculated at CCSD/cc-pVTZ
 hartrees
Energy at 0K-2611.855733
Energy at 298.15K-2611.859344
HF Energy-2611.458325
Nuclear repulsion energy80.952776
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/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' 3205 3016 5.15      
2 A' 1419 1336 19.66      
3 A' 726 683 14.78      
4 A' 128 121 64.75      
5 A" 3355 3157 0.52      
6 A" 943 887 0.84      

Unscaled Zero Point Vibrational Energy (zpe) 4887.6 cm-1
Scaled (by 0.9412) Zero Point Vibrational Energy (zpe) 4600.2 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 CCSD/cc-pVTZ
ABC
9.29349 0.38047 0.36551

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.000 1.480 0.000
Br2 -0.000 -0.367 0.000
H3 0.001 1.985 0.949
H4 0.001 1.985 -0.949

Atom - Atom Distances (Å)
  C1 Br2 H3 H4
C11.84721.07471.0747
Br21.84722.53642.5364
H31.07472.53641.8973
H41.07472.53641.8973

picture of bromomethyl radical state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
Br2 C1 H3 118.034 Br2 C1 H4 118.034
H3 C1 H4 123.932
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (C2V)

Jump to S1C1
Energy calculated at CCSD/cc-pVTZ
 hartrees
Energy at 0K-2611.855733
Energy at 298.15K 
HF Energy-2611.458323
Nuclear repulsion energy80.956617
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/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 A1 3205 3016 5.14      
2 A1 1419 1336 19.70      
3 A1 726 683 14.76      
4 B1 129 122 64.73      
5 B2 3354 3157 0.51      
6 B2 943 887 0.84      

Unscaled Zero Point Vibrational Energy (zpe) 4888.2 cm-1
Scaled (by 0.9412) Zero Point Vibrational Energy (zpe) 4600.8 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 CCSD/cc-pVTZ
ABC
9.29595 0.38051 0.36554

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.480
Br2 0.000 0.000 0.367
H3 0.000 0.949 -1.985
H4 0.000 -0.949 -1.985

Atom - Atom Distances (Å)
  C1 Br2 H3 H4
C11.84701.07471.0747
Br21.84702.53642.5364
H31.07472.53641.8970
H41.07472.53641.8970

picture of bromomethyl radical state 1 conformation 2
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
Br2 C1 H3 118.049 Br2 C1 H4 118.049
H3 C1 H4 123.902
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability