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

using model chemistry: PBEPBE/cc-pVDZ

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 PBEPBE/cc-pVDZ
 hartrees
Energy at 0K-2612.925511
Energy at 298.15K-2612.929155
HF Energy-2612.925511
Nuclear repulsion energy80.232081
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/cc-pVDZ
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A' 3100 3082 3.26      
2 A' 1306 1298 14.62      
3 A' 707 703 17.92      
4 A' 166 165 70.65      
5 A" 3263 3245 0.46      
6 A" 890 884 1.60      

Unscaled Zero Point Vibrational Energy (zpe) 4715.7 cm-1
Scaled (by 0.9942) Zero Point Vibrational Energy (zpe) 4688.3 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/cc-pVDZ
ABC
8.83268 0.37477 0.35970

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBEPBE/cc-pVDZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.004 1.492 0.000
Br2 -0.004 -0.370 0.000
H3 0.082 1.996 0.970
H4 0.082 1.996 -0.970

Atom - Atom Distances (Å)
  C1 Br2 H3 H4
C11.86181.09651.0965
Br21.86182.55832.5583
H31.09652.55831.9401
H41.09652.55831.9401

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 117.356 Br2 C1 H4 117.356
H3 C1 H4 124.426
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.179      
2 Br -0.003      
3 H 0.091      
4 H 0.091      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.148 0.761 0.000 0.776
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -26.016 0.317 0.000
y 0.317 -21.831 0.000
z 0.000 0.000 -24.121
Traceless
 xyz
x -3.041 0.317 0.000
y 0.317 3.238 0.000
z 0.000 0.000 -0.197
Polar
3z2-r2-0.395
x2-y2-4.186
xy0.317
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.163 0.036 0.000
y 0.036 5.704 0.000
z 0.000 0.000 2.915


<r2> (average value of r2) Å2
<r2> 42.989
(<r2>)1/2 6.557

Conformer 2 (C2V)

Jump to S1C1
Energy calculated at PBEPBE/cc-pVDZ
 hartrees
Energy at 0K-2612.925490
Energy at 298.15K 
HF Energy-2612.925490
Nuclear repulsion energy80.253250
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/cc-pVDZ
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A1 3101 3083 2.85 127.20 0.12 0.21
2 A1 1304 1297 14.73 2.20 0.67 0.81
3 A1 702 698 17.61 9.78 0.25 0.40
4 B1 116i 116i 73.62 0.12 0.75 0.86
5 B2 3266 3247 0.64 63.94 0.75 0.86
6 B2 887 882 1.67 4.72 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 4572.0 cm-1
Scaled (by 0.9942) Zero Point Vibrational Energy (zpe) 4545.5 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/cc-pVDZ
ABC
8.85965 0.37499 0.35976

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBEPBE/cc-pVDZ

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 0.972 -1.999
H4 0.000 -0.972 -1.999

Atom - Atom Distances (Å)
  C1 Br2 H3 H4
C11.86091.09621.0962
Br21.86092.56002.5600
H31.09622.56001.9432
H41.09622.56001.9432

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 117.582 Br2 C1 H4 117.582
H3 C1 H4 124.836
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.179      
2 Br -0.002      
3 H 0.091      
4 H 0.091      


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 -0.764 0.764
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -26.035 0.000 0.000
y 0.000 -24.106 0.000
z 0.000 0.000 -21.805
Traceless
 xyz
x -3.079 0.000 0.000
y 0.000 -0.186 0.000
z 0.000 0.000 3.265
Polar
3z2-r26.530
x2-y2-1.929
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.155 0.000 0.000
y 0.000 2.912 0.000
z 0.000 0.000 5.695


<r2> (average value of r2) Å2
<r2> 42.982
(<r2>)1/2 6.556