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

using model chemistry: B3LYP/CEP-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 B3LYP/CEP-31G
 hartrees
Energy at 0K-20.151428
Energy at 298.15K-20.155134
HF Energy-20.151428
Nuclear repulsion energy14.672030
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 B3LYP/CEP-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' 3170 3070 13.63      
2 A' 1356 1313 26.86      
3 A' 650 630 24.60      
4 A' 223 216 188.50      
5 A" 3355 3249 6.05      
6 A" 921 892 6.33      

Unscaled Zero Point Vibrational Energy (zpe) 4838.3 cm-1
Scaled (by 0.9684) Zero Point Vibrational Energy (zpe) 4685.4 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 B3LYP/CEP-31G
ABC
8.84602 0.35086 0.33748

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/CEP-31G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.000 1.548 0.000
Br2 -0.000 -0.382 0.000
H3 0.000 2.041 0.972
H4 0.000 2.041 -0.972

Atom - Atom Distances (Å)
  C1 Br2 H3 H4
C11.92941.09031.0903
Br21.92942.61062.6106
H31.09032.61061.9447
H41.09032.61061.9447

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 116.903 Br2 C1 H4 116.903
H3 C1 H4 126.194
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/CEP-31G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.517      
2 Br 0.050      
3 H 0.233      
4 H 0.233      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.001 1.324 0.000 1.324
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -23.332 0.003 0.000
y 0.003 -18.152 0.000
z 0.000 0.000 -20.890
Traceless
 xyz
x -3.811 0.003 0.000
y 0.003 3.959 0.000
z 0.000 0.000 -0.148
Polar
3z2-r2-0.297
x2-y2-5.180
xy0.003
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.195 0.000 0.000
y 0.000 5.778 0.000
z 0.000 0.000 1.803


<r2> (average value of r2) Å2
<r2> 33.807
(<r2>)1/2 5.814

Conformer 2 (C2V)

Jump to S1C1
Energy calculated at B3LYP/CEP-31G
 hartrees
Energy at 0K-20.151431
Energy at 298.15K 
HF Energy-20.151431
Nuclear repulsion energy14.671787
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 B3LYP/CEP-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 3170 3070 13.60 142.90 0.19 0.31
2 A1 1356 1313 26.90 2.56 0.51 0.68
3 A1 650 630 24.55 16.96 0.34 0.51
4 B1 227 220 188.41 0.90 0.75 0.86
5 B2 3354 3248 6.08 53.87 0.75 0.86
6 B2 921 892 6.33 9.35 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 4839.2 cm-1
Scaled (by 0.9684) Zero Point Vibrational Energy (zpe) 4686.3 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 B3LYP/CEP-31G
ABC
8.84679 0.35086 0.33748

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/CEP-31G

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.547
Br2 0.000 0.000 0.382
H3 0.000 0.972 -2.041
H4 0.000 -0.972 -2.041

Atom - Atom Distances (Å)
  C1 Br2 H3 H4
C11.92941.09041.0904
Br21.92942.61082.6108
H31.09042.61081.9446
H41.09042.61081.9446

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 116.915 Br2 C1 H4 116.915
H3 C1 H4 126.170
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/CEP-31G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.516      
2 Br 0.050      
3 H 0.233      
4 H 0.233      


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 -1.324 1.324
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -23.332 0.000 0.000
y 0.000 -20.891 0.000
z 0.000 0.000 -18.151
Traceless
 xyz
x -3.811 0.000 0.000
y 0.000 -0.149 0.000
z 0.000 0.000 3.960
Polar
3z2-r27.920
x2-y2-2.441
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.195 0.000 0.000
y 0.000 1.803 0.000
z 0.000 0.000 5.777


<r2> (average value of r2) Å2
<r2> 33.808
(<r2>)1/2 5.814