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

using model chemistry: TPSSh/6-31G(2df,p)

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 TPSSh/6-31G(2df,p)
 hartrees
Energy at 0K-2611.000442
Energy at 298.15K-2611.004082
HF Energy-2611.000442
Nuclear repulsion energy81.304099
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(2df,p)
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' 3179 3068 4.84      
2 A' 1403 1354 19.46      
3 A' 741 715 16.09      
4 A' 146 141 59.49      
5 A" 3331 3214 0.00      
6 A" 942 909 0.62      

Unscaled Zero Point Vibrational Energy (zpe) 4870.9 cm-1
Scaled (by 0.965) Zero Point Vibrational Energy (zpe) 4700.4 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 TPSSh/6-31G(2df,p)
ABC
9.22295 0.38439 0.36911

See section I.F.4 to change rotational constant units
Geometric Data calculated at TPSSh/6-31G(2df,p)

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.008 1.474 0.000
Br2 -0.008 -0.365 0.000
H3 0.159 1.961 0.951
H4 0.159 1.961 -0.951

Atom - Atom Distances (Å)
  C1 Br2 H3 H4
C11.83901.08151.0815
Br21.83902.51802.5180
H31.08152.51801.9029
H41.08152.51801.9029

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 116.731 Br2 C1 H4 116.731
H3 C1 H4 123.223
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (C2V)

Jump to S1C1
Energy calculated at TPSSh/6-31G(2df,p)
 hartrees
Energy at 0K-2611.000433
Energy at 298.15K 
HF Energy-2611.000433
Nuclear repulsion energy81.341430
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(2df,p)
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 3179 3068 4.58 103.25 0.12 0.21
2 A1 1402 1353 19.46 2.60 0.74 0.85
3 A1 735 710 15.89 9.17 0.13 0.23
4 B1 69i 66i 60.94 0.22 0.75 0.86
5 B2 3332 3215 0.01 58.32 0.75 0.86
6 B2 939 906 0.63 2.10 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 4759.4 cm-1
Scaled (by 0.965) Zero Point Vibrational Energy (zpe) 4592.8 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 TPSSh/6-31G(2df,p)
ABC
9.24497 0.38476 0.36938

See section I.F.4 to change rotational constant units
Geometric Data calculated at TPSSh/6-31G(2df,p)

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.470
Br2 0.000 0.000 0.365
H3 0.000 0.951 -1.981
H4 0.000 -0.951 -1.981

Atom - Atom Distances (Å)
  C1 Br2 H3 H4
C11.83521.07981.0798
Br21.83522.53182.5318
H31.07982.53181.9023
H41.07982.53181.9023

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 118.254 Br2 C1 H4 118.254
H3 C1 H4 123.491
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at TPSSh/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.423      
2 Br 0.056      
3 H 0.183      
4 H 0.183      


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 -1.051 1.051
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 3.263 0.000 0.000
y 0.000 3.889 0.000
z 0.000 0.000 5.900


<r2> (average value of r2) Å2
<r2> 42.091
(<r2>)1/2 6.488