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

using model chemistry: CCSD(T)/6-31G*

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 2A1

Conformer 1 (CS)

Jump to S1C2
Energy calculated at CCSD(T)/6-31G*
 hartrees
Energy at 0K-2609.117328
Energy at 298.15K-2609.121218
HF Energy-2608.866550
Nuclear repulsion energy79.830274
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(T)/6-31G*
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' 3198 3077        
2 A' 1423 1369        
3 A' 685 659        
4 A' 353 340        
5 A" 3346 3219        
6 A" 947 912        

Unscaled Zero Point Vibrational Energy (zpe) 4975.9 cm-1
Scaled (by 0.9621) Zero Point Vibrational Energy (zpe) 4787.4 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(T)/6-31G*
ABC
9.02461 0.36958 0.35565

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCSD(T)/6-31G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.007 1.505 0.000
Br2 -0.007 -0.372 0.000
H3 0.152 1.996 0.952
H4 0.152 1.996 -0.952

Atom - Atom Distances (Å)
  C1 Br2 H3 H4
C11.87701.08321.0832
Br21.87702.55742.5574
H31.08322.55741.9044
H41.08322.55741.9044

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 116.966 Br2 C1 H4 116.966
H3 C1 H4 123.048
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (C2V)

Jump to S1C1
Energy calculated at CCSD(T)/6-31G*
 hartrees
Energy at 0K-2609.117236
Energy at 298.15K 
HF Energy-2608.866292
Nuclear repulsion energy79.928513
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(T)/6-31G*
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 3208 3086        
2 A1 1422 1368        
3 A1 689 663        
4 B1 260i 251i        
5 B2 3360 3232        
6 B2 938 902        

Unscaled Zero Point Vibrational Energy (zpe) 4677.5 cm-1
Scaled (by 0.9621) Zero Point Vibrational Energy (zpe) 4500.2 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(T)/6-31G*
ABC
9.13903 0.37055 0.35611

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCSD(T)/6-31G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.501
Br2 0.000 0.000 0.372
H3 0.000 0.957 -2.007
H4 0.000 -0.957 -2.007

Atom - Atom Distances (Å)
  C1 Br2 H3 H4
C11.87291.08211.0821
Br21.87292.56382.5638
H31.08212.56381.9132
H41.08212.56381.9132

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 117.866 Br2 C1 H4 117.866
H3 C1 H4 124.267
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability