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

using model chemistry: PBEPBE/6-31G

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/6-31G
 hartrees
Energy at 0K-2610.333781
Energy at 298.15K-2610.337518
HF Energy-2610.333781
Nuclear repulsion energy78.803343
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/6-31G
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' 3157 3113 2.87      
2 A' 1367 1348 18.29      
3 A' 646 637 22.51      
4 A' 247 244 139.81      
5 A" 3327 3281 0.58      
6 A" 914 901 2.91      

Unscaled Zero Point Vibrational Energy (zpe) 4828.7 cm-1
Scaled (by 0.9862) Zero Point Vibrational Energy (zpe) 4762.1 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/6-31G
ABC
8.96764 0.35969 0.34582

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBEPBE/6-31G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 1.526 0.000
Br2 0.000 -0.377 0.000
H3 -0.002 2.024 0.966
H4 -0.002 2.024 -0.966

Atom - Atom Distances (Å)
  C1 Br2 H3 H4
C11.90371.08641.0864
Br21.90372.58842.5884
H31.08642.58841.9314
H41.08642.58841.9314

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 117.267 Br2 C1 H4 117.267
H3 C1 H4 125.466
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/6-31G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.528      
2 Br 0.109      
3 H 0.209      
4 H 0.209      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.004 1.017 0.000 1.017
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -26.229 -0.008 0.000
y -0.008 -21.891 0.000
z 0.000 0.000 -24.116
Traceless
 xyz
x -3.225 -0.008 0.000
y -0.008 3.281 0.000
z 0.000 0.000 -0.056
Polar
3z2-r2-0.112
x2-y2-4.337
xy-0.008
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.216 -0.001 0.000
y -0.001 5.443 0.000
z 0.000 0.000 2.115


<r2> (average value of r2) Å2
<r2> 44.061
(<r2>)1/2 6.638

Conformer 2 (C2V)

Jump to S1C1
Energy calculated at PBEPBE/6-31G
 hartrees
Energy at 0K-2610.333796
Energy at 298.15K 
HF Energy-2610.333796
Nuclear repulsion energy78.764777
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/6-31G
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 3156 3112 2.82 115.25 0.12 0.21
2 A1 1365 1346 18.37 1.81 0.63 0.78
3 A1 646 637 22.63 10.47 0.36 0.52
4 B1 241 238 139.96 0.04 0.75 0.86
5 B2 3327 3281 0.52 57.36 0.75 0.86
6 B2 913 900 2.88 9.56 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 4823.7 cm-1
Scaled (by 0.9862) Zero Point Vibrational Energy (zpe) 4757.1 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/6-31G
ABC
8.95386 0.35934 0.34547

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBEPBE/6-31G

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.528
Br2 0.000 0.000 0.377
H3 0.000 0.966 -2.024
H4 0.000 -0.966 -2.024

Atom - Atom Distances (Å)
  C1 Br2 H3 H4
C11.90501.08641.0864
Br21.90502.58832.5883
H31.08642.58831.9329
H41.08642.58831.9329

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 117.174 Br2 C1 H4 117.174
H3 C1 H4 125.652
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/6-31G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.527      
2 Br 0.108      
3 H 0.210      
4 H 0.210      


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 -1.021 1.021
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -26.231 0.000 0.000
y 0.000 -24.112 0.000
z 0.000 0.000 -21.890
Traceless
 xyz
x -3.230 0.000 0.000
y 0.000 -0.051 0.000
z 0.000 0.000 3.281
Polar
3z2-r26.563
x2-y2-2.119
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.216 0.000 0.000
y 0.000 2.115 0.000
z 0.000 0.000 5.445


<r2> (average value of r2) Å2
<r2> 44.084
(<r2>)1/2 6.640