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

using model chemistry: B2PLYP/3-21G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 2 yes C2V 2A1

Conformer 1 (CS)

Jump to S1C2
Vibrational Frequencies calculated at B2PLYP/3-21G*
Rotational Constants (cm-1) from geometry optimized at B2PLYP/3-21G*
See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP/3-21G*
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (C2V)

Jump to S1C1
Energy calculated at B2PLYP/3-21G*
 hartrees
Energy at 0K-2600.542595
Energy at 298.15K 
HF Energy-2600.474811
Nuclear repulsion energy80.132559
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 B2PLYP/3-21G*
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 3213 3213 4.97 96.27 0.12 0.21
2 A1 1452 1452 24.35 3.11 0.63 0.77
3 A1 716 716 18.71 7.71 0.26 0.41
4 B1 117 117 99.86 0.63 0.75 0.86
5 B2 3368 3368 0.07 53.55 0.75 0.86
6 B2 959 959 2.42 4.87 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 4912.7 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 4912.7 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 B2PLYP/3-21G*
ABC
9.24408 0.37222 0.35781

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP/3-21G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.497
Br2 0.000 0.000 0.371
H3 0.000 0.951 -2.003
H4 0.000 -0.951 -2.003

Atom - Atom Distances (Å)
  C1 Br2 H3 H4
C11.86851.07721.0772
Br21.86852.55742.5574
H31.07722.55741.9023
H41.07722.55741.9023

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 117.988 Br2 C1 H4 117.988
H3 C1 H4 124.023
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B2PLYP/3-21G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.419      
2 Br -0.029      
3 H 0.224      
4 H 0.224      


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 -0.959 0.959
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -25.985 0.000 0.000
y 0.000 -24.068 0.000
z 0.000 0.000 -21.266
Traceless
 xyz
x -3.317 0.000 0.000
y 0.000 -0.443 0.000
z 0.000 0.000 3.760
Polar
3z2-r27.521
x2-y2-1.916
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.902 0.000 0.000
y 0.000 2.763 0.000
z 0.000 0.000 5.088


<r2> (average value of r2) Å2
<r2> 42.947
(<r2>)1/2 6.553