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All results from a given calculation for CHBr2 (dibromomethyl radical)

using model chemistry: B3LYPultrafine/TZVP

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 2A'
Energy calculated at B3LYPultrafine/TZVP
 hartrees
Energy at 0K-5187.015872
Energy at 298.15K 
HF Energy-5187.015872
Nuclear repulsion energy334.972827
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/TZVP
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' 3221 3103 0.75 102.38 0.27 0.43
2 A' 609 587 8.27 5.12 0.33 0.49
3 A' 404 389 28.78 10.49 0.06 0.12
4 A' 184 177 0.11 4.75 0.54 0.70
5 A" 1187 1144 60.54 0.93 0.75 0.86
6 A" 744 717 146.96 2.72 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 3174.5 cm-1
Scaled (by 0.9634) Zero Point Vibrational Energy (zpe) 3058.3 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/TZVP
ABC
1.28457 0.04019 0.03900

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYPultrafine/TZVP

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.006 0.828 0.000
H2 -0.468 1.798 0.000
Br3 0.006 -0.097 1.630
Br4 0.006 -0.097 -1.630

Atom - Atom Distances (Å)
  C1 H2 Br3 Br4
C11.07931.87411.8741
H21.07932.54382.5438
Br31.87412.54383.2596
Br41.87412.54383.2596

picture of dibromomethyl radical state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
H2 C1 Br3 116.327 H2 C1 Br4 116.327
Br3 C1 Br4 120.837
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYPultrafine/TZVP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.203      
2 H 0.185      
3 Br 0.009      
4 Br 0.009      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.466 0.635 0.000 0.788
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -43.700 -0.963 0.000
y -0.963 -40.948 0.000
z 0.000 0.000 -41.477
Traceless
 xyz
x -2.487 -0.963 0.000
y -0.963 1.640 0.000
z 0.000 0.000 0.847
Polar
3z2-r21.694
x2-y2-2.751
xy-0.963
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.062 -0.097 0.000
y -0.097 5.370 0.000
z 0.000 0.000 10.549


<r2> (average value of r2) Å2
<r2> 220.419
(<r2>)1/2 14.847