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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 no CS 2A'
1 2 yes C2V 2A1

Conformer 1 (CS)

Jump to S1C2
Energy calculated at B1B95/6-31G
 hartrees
Energy at 0K-2611.095046
Energy at 298.15K-2611.098827
HF Energy-2611.095046
Nuclear repulsion energy79.566469
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' 3242 3092 2.81      
2 A' 1413 1347 21.33      
3 A' 672 641 25.31      
4 A' 263 251 140.94      
5 A" 3416 3258 0.12      
6 A" 945 901 2.40      

Unscaled Zero Point Vibrational Energy (zpe) 4975.9 cm-1
Scaled (by 0.9537) Zero Point Vibrational Energy (zpe) 4745.5 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 B1B95/6-31G
ABC
9.14880 0.36669 0.35256

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 -0.000 1.511 0.000
Br2 -0.000 -0.374 0.000
H3 0.001 2.006 0.956
H4 0.001 2.006 -0.956

Atom - Atom Distances (Å)
  C1 Br2 H3 H4
C11.88511.07661.0766
Br21.88512.56502.5650
H31.07662.56501.9122
H41.07662.56501.9122

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 117.371 Br2 C1 H4 117.371
H3 C1 H4 125.258
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 -0.542      
2 Br 0.106      
3 H 0.218      
4 H 0.218      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.002 1.151 0.000 1.151
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -26.136 0.004 0.000
y 0.004 -21.792 0.000
z 0.000 0.000 -24.036
Traceless
 xyz
x -3.222 0.004 0.000
y 0.004 3.295 0.000
z 0.000 0.000 -0.072
Polar
3z2-r2-0.145
x2-y2-4.345
xy0.004
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.179 0.000 0.000
y 0.000 5.266 0.000
z 0.000 0.000 2.064


<r2> (average value of r2) Å2
<r2> 43.456
(<r2>)1/2 6.592

Conformer 2 (C2V)

Jump to S1C1
Energy calculated at B1B95/6-31G
 hartrees
Energy at 0K-2611.095052
Energy at 298.15K 
HF Energy-2611.095052
Nuclear repulsion energy79.541095
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 3240 3090 2.81 113.78 0.12 0.21
2 A1 1411 1346 21.39 1.37 0.70 0.82
3 A1 668 637 25.40 10.47 0.36 0.53
4 B1 256 244 140.86 0.14 0.75 0.86
5 B2 3415 3257 0.10 56.41 0.75 0.86
6 B2 943 900 2.39 8.91 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 4966.9 cm-1
Scaled (by 0.9537) Zero Point Vibrational Energy (zpe) 4736.9 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
9.14898 0.36643 0.35232

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 -1.512
Br2 0.000 0.000 0.374
H3 0.000 0.956 -2.007
H4 0.000 -0.956 -2.007

Atom - Atom Distances (Å)
  C1 Br2 H3 H4
C11.88581.07661.0766
Br21.88582.56552.5655
H31.07662.56551.9122
H41.07662.56551.9122

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 117.365 Br2 C1 H4 117.365
H3 C1 H4 125.271
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 -0.542      
2 Br 0.105      
3 H 0.218      
4 H 0.218      


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 -1.153 1.153
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -26.137 0.000 0.000
y 0.000 -24.037 0.000
z 0.000 0.000 -21.787
Traceless
 xyz
x -3.226 0.000 0.000
y 0.000 -0.075 0.000
z 0.000 0.000 3.300
Polar
3z2-r26.601
x2-y2-2.100
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.179 0.000 0.000
y 0.000 2.063 0.000
z 0.000 0.000 5.268


<r2> (average value of r2) Å2
<r2> 43.473
(<r2>)1/2 6.593