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

using model chemistry: B3PW91/6-311G*

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
Energy calculated at B3PW91/6-311G*
 hartrees
Energy at 0K-2613.365564
Energy at 298.15K 
HF Energy-2613.365564
Nuclear repulsion energy80.690279
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 B3PW91/6-311G*
Rotational Constants (cm-1) from geometry optimized at B3PW91/6-311G*
See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/6-311G*
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (C2V)

Jump to S1C1
Energy calculated at B3PW91/6-311G*
 hartrees
Energy at 0K-2613.365593
Energy at 298.15K 
HF Energy-2613.365593
Nuclear repulsion energy80.688729
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 B3PW91/6-311G*
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 3176 3058 7.51      
2 A1 1393 1341 18.12      
3 A1 711 685 18.86      
4 B1 5i 5i 95.58      
5 B2 3333 3209 0.04      
6 B2 940 905 3.14      

Unscaled Zero Point Vibrational Energy (zpe) 4774.0 cm-1
Scaled (by 0.9627) Zero Point Vibrational Energy (zpe) 4595.9 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 B3PW91/6-311G*
ABC
9.18898 0.37814 0.36320

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/6-311G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.485
Br2 0.000 0.000 0.368
H3 0.000 0.954 -1.990
H4 0.000 -0.954 -1.990

Atom - Atom Distances (Å)
  C1 Br2 H3 H4
C11.85321.07921.0792
Br21.85322.54352.5435
H31.07922.54351.9080
H41.07922.54351.9080

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 117.874 Br2 C1 H4 117.874
H3 C1 H4 124.253
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/6-311G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.576      
2 Br 0.038      
3 H 0.269      
4 H 0.269      


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 -1.015 1.015
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -26.396 0.000 0.000
y 0.000 -24.227 0.000
z 0.000 0.000 -21.624
Traceless
 xyz
x -3.471 0.000 0.000
y 0.000 -0.217 0.000
z 0.000 0.000 3.687
Polar
3z2-r27.375
x2-y2-2.170
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.254 0.000 0.000
y 0.000 2.850 0.000
z 0.000 0.000 5.651


<r2> (average value of r2) Å2
<r2> 42.756
(<r2>)1/2 6.539