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: BLYP/6-311G*

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 BLYP/6-311G*
 hartrees
Energy at 0K-2613.375894
Energy at 298.15K-2613.379589
HF Energy-2613.375894
Nuclear repulsion energy79.560417
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 BLYP/6-311G*
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' 3086 3078 8.24      
2 A' 1353 1350 19.69      
3 A' 667 666 18.62      
4 A' 209 209 87.64      
5 A" 3240 3232 0.91      
6 A" 914 912 2.84      

Unscaled Zero Point Vibrational Energy (zpe) 4734.3 cm-1
Scaled (by 0.9975) Zero Point Vibrational Energy (zpe) 4722.5 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 BLYP/6-311G*
ABC
9.00868 0.36708 0.35299

See section I.F.4 to change rotational constant units
Geometric Data calculated at BLYP/6-311G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.005 1.510 0.000
Br2 -0.005 -0.373 0.000
H3 0.103 2.007 0.959
H4 0.103 2.007 -0.959

Atom - Atom Distances (Å)
  C1 Br2 H3 H4
C11.88321.08521.0852
Br21.88322.56822.5682
H31.08522.56821.9174
H41.08522.56821.9174

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 117.245 Br2 C1 H4 117.245
H3 C1 H4 124.117
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/6-311G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.530      
2 Br 0.044      
3 H 0.243      
4 H 0.243      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.211 0.873 0.000 0.898
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -26.574 0.445 0.000
y 0.445 -22.080 0.000
z 0.000 0.000 -24.550
Traceless
 xyz
x -3.259 0.445 0.000
y 0.445 3.482 0.000
z 0.000 0.000 -0.223
Polar
3z2-r2-0.445
x2-y2-4.494
xy0.445
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.297 0.036 0.000
y 0.036 5.981 0.000
z 0.000 0.000 2.942


<r2> (average value of r2) Å2
<r2> 43.712
(<r2>)1/2 6.611

Conformer 2 (C2V)

Jump to S1C1
Energy calculated at BLYP/6-311G*
 hartrees
Energy at 0K-2613.375927
Energy at 298.15K 
HF Energy-2613.375927
Nuclear repulsion energy79.581059
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 BLYP/6-311G*
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 3090 3082 7.50 116.26 0.15 0.25
2 A1 1351 1348 20.45 1.00 0.74 0.85
3 A1 664 663 17.74 10.98 0.27 0.42
4 B1 152i 152i 94.65 0.00 0.75 0.86
5 B2 3246 3238 0.58 63.12 0.75 0.86
6 B2 910 908 2.99 4.44 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 4554.4 cm-1
Scaled (by 0.9975) Zero Point Vibrational Energy (zpe) 4543.0 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 BLYP/6-311G*
ABC
9.05301 0.36729 0.35297

See section I.F.4 to change rotational constant units
Geometric Data calculated at BLYP/6-311G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.509
Br2 0.000 0.000 0.374
H3 0.000 0.961 -2.011
H4 0.000 -0.961 -2.011

Atom - Atom Distances (Å)
  C1 Br2 H3 H4
C11.88211.08461.0846
Br21.88212.57112.5711
H31.08462.57111.9223
H41.08462.57111.9223

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 117.607 Br2 C1 H4 117.607
H3 C1 H4 124.786
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/6-311G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.533      
2 Br 0.045      
3 H 0.244      
4 H 0.244      


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 -0.879 0.879
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -26.607 0.000 0.000
y 0.000 -24.523 0.000
z 0.000 0.000 -22.028
Traceless
 xyz
x -3.331 0.000 0.000
y 0.000 -0.206 0.000
z 0.000 0.000 3.537
Polar
3z2-r27.074
x2-y2-2.084
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.287 0.000 0.000
y 0.000 2.936 0.000
z 0.000 0.000 5.965


<r2> (average value of r2) Å2
<r2> 43.707
(<r2>)1/2 6.611