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

using model chemistry: TPSSh/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 yes C2V 2A1

Conformer 1 (CS)

Jump to S1C2
Energy calculated at TPSSh/6-31G*
 hartrees
Energy at 0K-2610.823838
Energy at 298.15K-2610.827709
HF Energy-2610.823838
Nuclear repulsion energy80.328988
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 TPSSh/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' 3197 3067 7.72      
2 A' 1416 1359 26.51      
3 A' 699 671 21.80      
4 A' 332 318 68.37      
5 A" 3348 3212 0.29      
6 A" 940 902 1.32      

Unscaled Zero Point Vibrational Energy (zpe) 4965.8 cm-1
Scaled (by 0.9594) Zero Point Vibrational Energy (zpe) 4764.2 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 TPSSh/6-31G*
ABC
9.04189 0.37461 0.36029

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.008 1.496 0.000
Br2 -0.008 -0.370 0.000
H3 0.170 1.980 0.952
H4 0.170 1.980 -0.952

Atom - Atom Distances (Å)
  C1 Br2 H3 H4
C11.86611.08221.0822
Br21.86612.54112.5411
H31.08222.54111.9039
H41.08222.54111.9039

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 116.516 Br2 C1 H4 116.516
H3 C1 H4 123.187
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at TPSSh/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.355      
2 Br -0.059      
3 H 0.207      
4 H 0.207      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.281 1.082 0.000 1.118
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.404 0.071 0.000
y 0.071 5.485 0.000
z 0.000 0.000 3.184


<r2> (average value of r2) Å2
<r2> 42.728
(<r2>)1/2 6.537

Conformer 2 (C2V)

Jump to S1C1
Energy calculated at TPSSh/6-31G*
 hartrees
Energy at 0K-2610.823761
Energy at 298.15K 
HF Energy-2610.823761
Nuclear repulsion energy80.383848
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 TPSSh/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 3204 3074 5.75 113.89 0.12 0.22
2 A1 1412 1355 27.71 2.63 0.63 0.77
3 A1 694 666 20.11 8.86 0.22 0.37
4 B1 233i 223i 81.75 0.43 0.75 0.86
5 B2 3360 3224 0.02 62.55 0.75 0.86
6 B2 929 892 1.50 4.40 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 4683.1 cm-1
Scaled (by 0.9594) Zero Point Vibrational Energy (zpe) 4493.0 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 TPSSh/6-31G*
ABC
9.14006 0.37516 0.36037

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.492
Br2 0.000 0.000 0.370
H3 0.000 0.957 -1.993
H4 0.000 -0.957 -1.993

Atom - Atom Distances (Å)
  C1 Br2 H3 H4
C11.86151.08011.0801
Br21.86152.54942.5494
H31.08012.54941.9131
H41.08012.54941.9131

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 117.672 Br2 C1 H4 117.672
H3 C1 H4 124.656
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at TPSSh/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.361      
2 Br -0.056      
3 H 0.209      
4 H 0.209      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.000 0.000 -1.093 1.093
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.380 0.000 0.000
y 0.000 3.172 0.000
z 0.000 0.000 5.464


<r2> (average value of r2) Å2
<r2> 42.713
(<r2>)1/2 6.536