return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

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

using model chemistry: M06-2X/6-31G

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 M06-2X/6-31G
 hartrees
Energy at 0K-2610.846889
Energy at 298.15K-2610.850539
HF Energy-2610.846889
Nuclear repulsion energy79.254111
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 M06-2X/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' 3239 3239 2.19      
2 A' 1416 1416 22.07      
3 A' 660 660 29.17      
4 A' 175 175 116.22      
5 A" 3411 3411 0.05      
6 A" 951 951 1.96      

Unscaled Zero Point Vibrational Energy (zpe) 4925.2 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 4925.2 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 M06-2X/6-31G
ABC
9.11399 0.36355 0.34973

See section I.F.4 to change rotational constant units
Geometric Data calculated at M06-2X/6-31G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.003 1.519 0.000
Br2 -0.003 -0.375 0.000
H3 0.070 2.009 0.956
H4 0.070 2.009 -0.956

Atom - Atom Distances (Å)
  C1 Br2 H3 H4
C11.89421.07671.0767
Br21.89422.57002.5700
H31.07672.57001.9114
H41.07672.57001.9114

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 117.092 Br2 C1 H4 117.092
H3 C1 H4 125.160
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at M06-2X/6-31G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.514      
2 Br 0.083      
3 H 0.216      
4 H 0.216      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.166 1.371 0.000 1.381
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -26.360 0.323 0.000
y 0.323 -21.890 0.000
z 0.000 0.000 -24.263
Traceless
 xyz
x -3.284 0.323 0.000
y 0.323 3.421 0.000
z 0.000 0.000 -0.138
Polar
3z2-r2-0.275
x2-y2-4.470
xy0.323
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.169 0.033 0.000
y 0.033 5.175 0.000
z 0.000 0.000 2.050


<r2> (average value of r2) Å2
<r2> 43.781
(<r2>)1/2 6.617

Conformer 2 (C2V)

Jump to S1C1
Energy calculated at M06-2X/6-31G
 hartrees
Energy at 0K-2610.846876
Energy at 298.15K 
HF Energy-2610.846876
Nuclear repulsion energy79.237675
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 M06-2X/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 3251 3251 2.18 123.42 0.11 0.20
2 A1 1412 1412 23.13 1.69 0.69 0.82
3 A1 662 662 28.93 9.12 0.36 0.52
4 B1 40 40 121.82 0.17 0.75 0.86
5 B2 3425 3425 0.08 58.53 0.75 0.86
6 B2 946 946 1.96 9.10 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 4867.5 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 4867.5 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 M06-2X/6-31G
ABC
9.12932 0.36339 0.34948

See section I.F.4 to change rotational constant units
Geometric Data calculated at M06-2X/6-31G

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.519
Br2 0.000 0.000 0.375
H3 0.000 0.957 -2.011
H4 0.000 -0.957 -2.011

Atom - Atom Distances (Å)
  C1 Br2 H3 H4
C11.89461.07631.0763
Br21.89462.57152.5715
H31.07632.57151.9143
H41.07632.57151.9143

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 117.214 Br2 C1 H4 117.214
H3 C1 H4 125.572
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at M06-2X/6-31G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.516      
2 Br 0.083      
3 H 0.216      
4 H 0.216      


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 -1.373 1.373
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -26.376 0.000 0.000
y 0.000 -24.248 0.000
z 0.000 0.000 -21.866
Traceless
 xyz
x -3.319 0.000 0.000
y 0.000 -0.127 0.000
z 0.000 0.000 3.446
Polar
3z2-r26.892
x2-y2-2.128
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.178 0.000 0.000
y 0.000 2.078 0.000
z 0.000 0.000 5.204


<r2> (average value of r2) Å2
<r2> 43.795
(<r2>)1/2 6.618