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

using model chemistry: B1B95/6-31G*

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 B1B95/6-31G*
 hartrees
Energy at 0K-2611.238079
Energy at 298.15K-2611.241866
HF Energy-2611.238079
Nuclear repulsion energy81.046203
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 B1B95/6-31G*
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' 3222 3059 5.66      
2 A' 1412 1340 20.38      
3 A' 722 686 20.97      
4 A' 254 242 76.63      
5 A" 3375 3204 0.00      
6 A" 941 893 1.47      

Unscaled Zero Point Vibrational Energy (zpe) 4963.0 cm-1
Scaled (by 0.9493) Zero Point Vibrational Energy (zpe) 4711.4 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 B1B95/6-31G*
ABC
9.14742 0.38177 0.36686

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/6-31G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.006 1.479 0.000
Br2 -0.006 -0.366 0.000
H3 0.117 1.975 0.950
H4 0.117 1.975 -0.950

Atom - Atom Distances (Å)
  C1 Br2 H3 H4
C11.84491.07881.0788
Br21.84492.52942.5294
H31.07882.52941.8999
H41.07882.52941.8999

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 117.384 Br2 C1 H4 117.384
H3 C1 H4 123.429
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.363      
2 Br -0.051      
3 H 0.207      
4 H 0.207      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.228 0.974 0.000 1.000
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -25.823 0.486 0.000
y 0.486 -21.340 0.000
z 0.000 0.000 -23.949
Traceless
 xyz
x -3.178 0.486 0.000
y 0.486 3.546 0.000
z 0.000 0.000 -0.368
Polar
3z2-r2-0.736
x2-y2-4.483
xy0.486
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.379 0.055 0.000
y 0.055 5.428 0.000
z 0.000 0.000 3.147


<r2> (average value of r2) Å2
<r2> 42.251
(<r2>)1/2 6.500

Conformer 2 (C2V)

Jump to S1C1
Energy calculated at B1B95/6-31G*
 hartrees
Energy at 0K-2611.238053
Energy at 298.15K 
HF Energy-2611.238053
Nuclear repulsion energy81.104471
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 B1B95/6-31G*
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 3227 3063 4.56 107.10 0.12 0.22
2 A1 1410 1339 20.91 2.62 0.66 0.79
3 A1 720 683 19.87 8.83 0.22 0.36
4 B1 184i 175i 85.36 0.36 0.75 0.86
5 B2 3383 3211 0.05 58.73 0.75 0.86
6 B2 936 888 1.60 4.12 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 4745.4 cm-1
Scaled (by 0.9493) Zero Point Vibrational Energy (zpe) 4504.8 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 B1B95/6-31G*
ABC
9.21482 0.38235 0.36711

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/6-31G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.476
Br2 0.000 0.000 0.366
H3 0.000 0.953 -1.981
H4 0.000 -0.953 -1.981

Atom - Atom Distances (Å)
  C1 Br2 H3 H4
C11.84251.07811.0781
Br21.84252.53312.5331
H31.07812.53311.9054
H41.07812.53311.9054

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 117.912 Br2 C1 H4 117.912
H3 C1 H4 124.177
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.367      
2 Br -0.049      
3 H 0.208      
4 H 0.208      


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 -0.980 0.980
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -25.860 0.000 0.000
y 0.000 -23.917 0.000
z 0.000 0.000 -21.278
Traceless
 xyz
x -3.263 0.000 0.000
y 0.000 -0.349 0.000
z 0.000 0.000 3.611
Polar
3z2-r27.223
x2-y2-1.943
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.363 0.000 0.000
y 0.000 3.139 0.000
z 0.000 0.000 5.415


<r2> (average value of r2) Å2
<r2> 42.227
(<r2>)1/2 6.498