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

using model chemistry: B2PLYP=FULLultrafine/cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 2A'
Energy calculated at B2PLYP=FULLultrafine/cc-pVTZ
 hartrees
Energy at 0K-5186.259536
Energy at 298.15K 
HF Energy-5186.033199
Nuclear repulsion energy338.200335
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 B2PLYP=FULLultrafine/cc-pVTZ
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' 3249 3104 0.76 94.78 0.25 0.40
2 A' 628 600 6.50 5.47 0.22 0.35
3 A' 409 391 25.04 10.13 0.07 0.14
4 A' 187 179 0.11 3.37 0.50 0.67
5 A" 1196 1142 60.09 0.76 0.75 0.86
6 A" 783 748 123.23 1.10 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 3225.8 cm-1
Scaled (by 0.9554) Zero Point Vibrational Energy (zpe) 3081.9 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 B2PLYP=FULLultrafine/cc-pVTZ
ABC
1.29365 0.04104 0.03981

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP=FULLultrafine/cc-pVTZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.006 0.825 0.000
H2 -0.450 1.798 0.000
Br3 0.006 -0.096 1.613
Br4 0.006 -0.096 -1.613

Atom - Atom Distances (Å)
  C1 H2 Br3 Br4
C11.07461.85761.8576
H21.07462.52962.5296
Br31.85762.52963.2258
Br41.85762.52963.2258

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 116.691 H2 C1 Br4 116.691
Br3 C1 Br4 120.520
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B2PLYP=FULLultrafine/cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.223      
2 H 0.171      
3 Br 0.026      
4 Br 0.026      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.405 0.651 0.000 0.767
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -43.587 -0.852 0.001
y -0.852 -40.904 0.005
z 0.001 0.005 -41.613
Traceless
 xyz
x -2.329 -0.852 0.001
y -0.852 1.696 0.005
z 0.001 0.005 0.633
Polar
3z2-r21.265
x2-y2-2.683
xy-0.852
xz0.001
yz0.005


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.550 -0.113 0.000
y -0.113 5.813 0.002
z 0.000 0.002 10.553


<r2> (average value of r2) Å2
<r2> 216.530
(<r2>)1/2 14.715