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

using model chemistry: wB97X-D/SDD

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 2A'
Energy calculated at wB97X-D/SDD
 hartrees
Energy at 0K-65.371677
Energy at 298.15K 
HF Energy-65.371677
Nuclear repulsion energy36.977026
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 wB97X-D/SDD
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' 3285 3285 0.90 113.97 0.24 0.39
2 A' 607 607 12.31 10.53 0.30 0.46
3 A' 361 361 61.99 6.89 0.03 0.05
4 A' 194 194 0.24 8.01 0.65 0.79
5 A" 1222 1222 67.34 1.30 0.75 0.86
6 A" 795 795 151.86 2.79 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 3231.5 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 3231.5 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 wB97X-D/SDD
ABC
1.23904 0.03900 0.03784

See section I.F.4 to change rotational constant units
Geometric Data calculated at wB97X-D/SDD

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.005 0.844 0.000
H2 -0.406 1.846 0.000
Br3 0.005 -0.099 1.655
Br4 0.005 -0.099 -1.655

Atom - Atom Distances (Å)
  C1 H2 Br3 Br4
C11.08341.90401.9040
H21.08342.58612.5861
Br31.90402.58613.3090
Br41.90402.58613.3090

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 117.251 H2 C1 Br4 117.251
Br3 C1 Br4 120.674
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at wB97X-D/SDD Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.567      
2 H 0.303      
3 Br 0.132      
4 Br 0.132      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.585 0.826 0.000 1.013
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -37.215 -1.030 0.000
y -1.030 -33.787 0.000
z 0.000 0.000 -35.415
Traceless
 xyz
x -2.614 -1.030 0.000
y -1.030 2.527 0.000
z 0.000 0.000 0.086
Polar
3z2-r20.173
x2-y2-3.427
xy-1.030
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.780 -0.113 0.000
y -0.113 3.670 0.000
z 0.000 0.000 9.466


<r2> (average value of r2) Å2
<r2> 68.459
(<r2>)1/2 8.274