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

using model chemistry: PBEPBE/6-311G**

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 PBEPBE/6-311G**
 hartrees
Energy at 0K-2612.929264
Energy at 298.15K-2612.932854
HF Energy-2612.929264
Nuclear repulsion energy80.363945
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 PBEPBE/6-311G**
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' 3109 3081 4.59      
2 A' 1337 1325 14.78      
3 A' 702 696 16.94      
4 A' 130 129 89.84      
5 A" 3266 3236 0.04      
6 A" 907 899 3.08      

Unscaled Zero Point Vibrational Energy (zpe) 4725.3 cm-1
Scaled (by 0.9909) Zero Point Vibrational Energy (zpe) 4682.3 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 PBEPBE/6-311G**
ABC
9.03004 0.37540 0.36042

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBEPBE/6-311G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.000 1.491 0.000
Br2 -0.000 -0.370 0.000
H3 0.001 1.994 0.962
H4 0.001 1.994 -0.962

Atom - Atom Distances (Å)
  C1 Br2 H3 H4
C11.86071.08581.0858
Br21.86072.55182.5518
H31.08582.55181.9248
H41.08582.55181.9248

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 117.581 Br2 C1 H4 117.581
H3 C1 H4 124.838
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/6-311G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.385      
2 Br 0.035      
3 H 0.175      
4 H 0.175      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.002 0.856 0.000 0.856
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -26.418 0.004 0.000
y 0.004 -21.965 0.000
z 0.000 0.000 -24.362
Traceless
 xyz
x -3.255 0.004 0.000
y 0.004 3.425 0.000
z 0.000 0.000 -0.170
Polar
3z2-r2-0.341
x2-y2-4.453
xy0.004
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.338 0.000 0.000
y 0.000 5.906 0.000
z 0.000 0.000 2.953


<r2> (average value of r2) Å2
<r2> 43.069
(<r2>)1/2 6.563

Conformer 2 (C2V)

Jump to S1C1
Energy calculated at PBEPBE/6-311G**
 hartrees
Energy at 0K-2612.929302
Energy at 298.15K 
HF Energy-2612.929302
Nuclear repulsion energy80.356641
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 PBEPBE/6-311G**
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 3107 3079 4.58 117.15 0.13 0.23
2 A1 1336 1324 14.75 1.12 0.72 0.84
3 A1 695 689 17.04 9.69 0.26 0.41
4 B1 127 126 89.88 0.00 0.75 0.86
5 B2 3264 3235 0.04 59.68 0.75 0.86
6 B2 906 898 3.08 4.21 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 4718.2 cm-1
Scaled (by 0.9909) Zero Point Vibrational Energy (zpe) 4675.3 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 PBEPBE/6-311G**
ABC
9.02748 0.37533 0.36035

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBEPBE/6-311G**

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.491
Br2 0.000 0.000 0.370
H3 0.000 0.963 -1.994
H4 0.000 -0.963 -1.994

Atom - Atom Distances (Å)
  C1 Br2 H3 H4
C11.86091.08581.0858
Br21.86092.55182.5518
H31.08582.55181.9250
H41.08582.55181.9250

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 117.565 Br2 C1 H4 117.565
H3 C1 H4 124.870
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/6-311G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.385      
2 Br 0.034      
3 H 0.175      
4 H 0.175      


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 -0.856 0.856
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -26.419 0.000 0.000
y 0.000 -24.361 0.000
z 0.000 0.000 -21.965
Traceless
 xyz
x -3.256 0.000 0.000
y 0.000 -0.170 0.000
z 0.000 0.000 3.425
Polar
3z2-r26.850
x2-y2-2.057
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.338 0.000 0.000
y 0.000 2.953 0.000
z 0.000 0.000 5.907


<r2> (average value of r2) Å2
<r2> 43.073
(<r2>)1/2 6.563