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: B3LYPultrafine/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
Vibrational Frequencies calculated at B3LYPultrafine/6-311G*
Rotational Constants (cm-1) from geometry optimized at B3LYPultrafine/6-311G*
See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYPultrafine/6-311G*
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (C2V)

Jump to S1C1
Energy calculated at B3LYPultrafine/6-311G*
 hartrees
Energy at 0K-2613.397908
Energy at 298.15K 
HF Energy-2613.397908
Nuclear repulsion energy80.265676
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 B3LYPultrafine/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 3168 3061 7.33 111.92 0.14 0.25
2 A1 1392 1345 20.90 0.86 0.75 0.86
3 A1 693 669 19.21 9.18 0.26 0.42
4 B1 120i 116i 94.01 0.00 0.75 0.86
5 B2 3325 3213 0.12 59.75 0.75 0.86
6 B2 937 905 2.82 4.13 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 4697.4 cm-1
Scaled (by 0.9663) Zero Point Vibrational Energy (zpe) 4539.1 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 B3LYPultrafine/6-311G*
ABC
9.18728 0.37377 0.35916

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYPultrafine/6-311G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.495
Br2 0.000 0.000 0.370
H3 0.000 0.954 -1.997
H4 0.000 -0.954 -1.997

Atom - Atom Distances (Å)
  C1 Br2 H3 H4
C11.86501.07831.0783
Br21.86502.55242.5524
H31.07832.55241.9082
H41.07832.55241.9082

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 117.766 Br2 C1 H4 117.766
H3 C1 H4 124.467
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYPultrafine/6-311G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.549      
2 Br 0.036      
3 H 0.256      
4 H 0.256      


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 -0.997 0.997
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -26.533 0.000 0.000
y 0.000 -24.422 0.000
z 0.000 0.000 -21.830
Traceless
 xyz
x -3.406 0.000 0.000
y 0.000 -0.241 0.000
z 0.000 0.000 3.647
Polar
3z2-r27.294
x2-y2-2.111
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.255 0.000 0.000
y 0.000 2.870 0.000
z 0.000 0.000 5.727


<r2> (average value of r2) Å2
<r2> 43.154
(<r2>)1/2 6.569