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

using model chemistry: B1B95/cc-pVTZ

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 B1B95/cc-pVTZ
 hartrees
Energy at 0K-2613.783375
Energy at 298.15K-2613.787010
HF Energy-2613.783375
Nuclear repulsion energy81.336766
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 B1B95/cc-pVTZ
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' 3195 3058 5.00      
2 A' 1384 1325 16.12      
3 A' 733 701 17.75      
4 A' 144 137 68.80      
5 A" 3353 3209 0.49      
6 A" 931 891 1.13      

Unscaled Zero Point Vibrational Energy (zpe) 4869.7 cm-1
Scaled (by 0.9571) Zero Point Vibrational Energy (zpe) 4660.8 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 B1B95/cc-pVTZ
ABC
9.26772 0.38452 0.36920

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/cc-pVTZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 1.473 0.000
Br2 0.000 -0.365 0.000
H3 -0.000 1.973 0.950
H4 -0.000 1.973 -0.950

Atom - Atom Distances (Å)
  C1 Br2 H3 H4
C11.83771.07391.0739
Br21.83772.52422.5242
H31.07392.52421.8999
H41.07392.52421.8999

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 117.802 Br2 C1 H4 117.802
H3 C1 H4 124.396
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.301      
2 Br 0.000      
3 H 0.151      
4 H 0.151      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.000 0.934 0.000 0.934
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -26.202 -0.000 0.000
y -0.000 -21.890 0.000
z 0.000 0.000 -24.245
Traceless
 xyz
x -3.134 -0.000 0.000
y -0.000 3.333 0.000
z 0.000 0.000 -0.199
Polar
3z2-r2-0.399
x2-y2-4.311
xy-0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.079 0.000 0.000
y 0.000 6.124 0.000
z 0.000 0.000 3.538


<r2> (average value of r2) Å2
<r2> 42.332
(<r2>)1/2 6.506

Conformer 2 (C2V)

Jump to S1C1
Energy calculated at B1B95/cc-pVTZ
 hartrees
Energy at 0K-2613.783366
Energy at 298.15K 
HF Energy-2613.783366
Nuclear repulsion energy81.362975
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 B1B95/cc-pVTZ
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 3193 3056 5.05 119.06 0.11 0.19
2 A1 1384 1325 16.02 0.84 0.66 0.80
3 A1 729 698 17.75 9.83 0.18 0.31
4 B1 140 134 68.78 0.07 0.75 0.86
5 B2 3351 3207 0.49 55.99 0.75 0.86
6 B2 931 891 1.14 2.26 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 4863.8 cm-1
Scaled (by 0.9571) Zero Point Vibrational Energy (zpe) 4655.2 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 B1B95/cc-pVTZ
ABC
9.27091 0.38478 0.36945

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/cc-pVTZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.472
Br2 0.000 0.000 0.365
H3 0.000 0.950 -1.973
H4 0.000 -0.950 -1.973

Atom - Atom Distances (Å)
  C1 Br2 H3 H4
C11.83701.07391.0739
Br21.83702.52372.5237
H31.07392.52371.8996
H41.07392.52371.8996

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 117.820 Br2 C1 H4 117.820
H3 C1 H4 124.359
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.302      
2 Br 0.000      
3 H 0.151      
4 H 0.151      


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 -0.932 0.932
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -26.200 0.000 0.000
y 0.000 -24.245 0.000
z 0.000 0.000 -21.893
Traceless
 xyz
x -3.131 0.000 0.000
y 0.000 -0.199 0.000
z 0.000 0.000 3.329
Polar
3z2-r26.659
x2-y2-1.955
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.079 0.000 0.000
y 0.000 3.537 0.000
z 0.000 0.000 6.122


<r2> (average value of r2) Å2
<r2> 42.315
(<r2>)1/2 6.505