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

using model chemistry: HF/Def2TZVPP

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 2A'
Energy calculated at HF/Def2TZVPP
 hartrees
Energy at 0K-5183.242086
Energy at 298.15K 
HF Energy-5183.242086
Nuclear repulsion energy337.454051
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 HF/Def2TZVPP
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' 3370 3054 0.87 89.82 0.22 0.36
2 A' 650 589 8.58 6.26 0.13 0.23
3 A' 494 448 14.35 10.33 0.11 0.20
4 A' 194 176 0.13 2.83 0.44 0.61
5 A" 1281 1161 79.29 0.13 0.75 0.86
6 A" 827 750 91.42 4.12 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 3407.5 cm-1
Scaled (by 0.9064) Zero Point Vibrational Energy (zpe) 3088.5 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 HF/Def2TZVPP
ABC
1.27688 0.04090 0.03967

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/Def2TZVPP

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.006 0.834 0.000
H2 -0.480 1.786 0.000
Br3 0.006 -0.097 1.616
Br4 0.006 -0.097 -1.616

Atom - Atom Distances (Å)
  C1 H2 Br3 Br4
C11.06901.86441.8644
H21.06902.52802.5280
Br31.86442.52803.2311
Br41.86442.52803.2311

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 116.394 H2 C1 Br4 116.394
Br3 C1 Br4 120.114
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/Def2TZVPP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.067      
2 H 0.105      
3 Br -0.019      
4 Br -0.019      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.384 0.972 0.000 1.045
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -43.688 -0.877 0.000
y -0.877 -40.738 0.000
z 0.000 0.000 -42.653
Traceless
 xyz
x -1.992 -0.877 0.000
y -0.877 2.432 0.000
z 0.000 0.000 -0.440
Polar
3z2-r2-0.880
x2-y2-2.950
xy-0.877
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.063 -0.100 0.000
y -0.100 6.007 0.000
z 0.000 0.000 9.924


<r2> (average value of r2) Å2
<r2> 217.412
(<r2>)1/2 14.745