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

using model chemistry: HSEh1PBE/3-21G

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 HSEh1PBE/3-21G
 hartrees
Energy at 0K-2600.438958
Energy at 298.15K-2600.442697
HF Energy-2600.438958
Nuclear repulsion energy79.000831
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 HSEh1PBE/3-21G
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' 3221 3103 2.96      
2 A' 1403 1351 23.96      
3 A' 676 652 22.07      
4 A' 233 225 141.83      
5 A" 3388 3264 0.01      
6 A" 914 881 2.73      

Unscaled Zero Point Vibrational Energy (zpe) 4918.0 cm-1
Scaled (by 0.9633) Zero Point Vibrational Energy (zpe) 4737.6 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 HSEh1PBE/3-21G
ABC
9.13126 0.36104 0.34731

See section I.F.4 to change rotational constant units
Geometric Data calculated at HSEh1PBE/3-21G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 1.524 0.000
Br2 0.000 -0.377 0.000
H3 -0.000 2.020 0.957
H4 -0.000 2.020 -0.957

Atom - Atom Distances (Å)
  C1 Br2 H3 H4
C11.90021.07811.0781
Br21.90022.58072.5807
H31.07812.58071.9141
H41.07812.58071.9141

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 117.419 Br2 C1 H4 117.419
H3 C1 H4 125.161
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HSEh1PBE/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.680      
2 Br 0.148      
3 H 0.266      
4 H 0.266      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.001 0.971 0.000 0.971
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -26.185 -0.002 0.000
y -0.002 -21.741 0.000
z 0.000 0.000 -23.991
Traceless
 xyz
x -3.319 -0.002 0.000
y -0.002 3.347 0.000
z 0.000 0.000 -0.028
Polar
3z2-r2-0.055
x2-y2-4.444
xy-0.002
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.047 -0.000 0.000
y -0.000 5.088 0.000
z 0.000 0.000 1.950


<r2> (average value of r2) Å2
<r2> 43.859
(<r2>)1/2 6.623

Conformer 2 (C2V)

Jump to S1C1
Energy calculated at HSEh1PBE/3-21G
 hartrees
Energy at 0K-2600.438958
Energy at 298.15K 
HF Energy-2600.438958
Nuclear repulsion energy78.979363
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 HSEh1PBE/3-21G
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 3220 3102 2.92 100.32 0.12 0.21
2 A1 1403 1352 24.11 1.19 0.70 0.83
3 A1 680 655 22.03 8.88 0.37 0.54
4 B1 240 231 142.28 0.23 0.75 0.86
5 B2 3387 3263 0.01 51.67 0.75 0.86
6 B2 915 881 2.73 8.31 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 4922.3 cm-1
Scaled (by 0.9633) Zero Point Vibrational Energy (zpe) 4741.7 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 HSEh1PBE/3-21G
ABC
9.12837 0.36083 0.34711

See section I.F.4 to change rotational constant units
Geometric Data calculated at HSEh1PBE/3-21G

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.524
Br2 0.000 0.000 0.377
H3 0.000 0.957 -2.020
H4 0.000 -0.957 -2.020

Atom - Atom Distances (Å)
  C1 Br2 H3 H4
C11.90091.07811.0781
Br21.90092.58112.5811
H31.07812.58111.9144
H41.07812.58111.9144

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 117.400 Br2 C1 H4 117.400
H3 C1 H4 125.200
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HSEh1PBE/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.679      
2 Br 0.147      
3 H 0.266      
4 H 0.266      


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 -0.973 0.973
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -26.186 0.000 0.000
y 0.000 -23.990 0.000
z 0.000 0.000 -21.738
Traceless
 xyz
x -3.322 0.000 0.000
y 0.000 -0.028 0.000
z 0.000 0.000 3.350
Polar
3z2-r26.700
x2-y2-2.196
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.046 0.000 0.000
y 0.000 1.950 0.000
z 0.000 0.000 5.089


<r2> (average value of r2) Å2
<r2> 43.873
(<r2>)1/2 6.624