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

using model chemistry: B3LYP/cc-pVDZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 2A'
Energy calculated at B3LYP/cc-pVDZ
 hartrees
Energy at 0K-5186.953421
Energy at 298.15K 
HF Energy-5186.953421
Nuclear repulsion energy334.643716
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 B3LYP/cc-pVDZ
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' 3202 3106 1.02 109.46 0.26 0.42
2 A' 619 601 10.46 6.20 0.40 0.58
3 A' 449 436 23.38 13.06 0.06 0.11
4 A' 183 178 0.06 4.72 0.53 0.70
5 A" 1157 1122 55.64 2.39 0.75 0.86
6 A" 750 728 140.41 2.16 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 3180.3 cm-1
Scaled (by 0.97) Zero Point Vibrational Energy (zpe) 3084.9 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 B3LYP/cc-pVDZ
ABC
1.25769 0.04022 0.03901

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/cc-pVDZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.007 0.839 0.000
H2 -0.527 1.792 0.000
Br3 0.007 -0.098 1.629
Br4 0.007 -0.098 -1.629

Atom - Atom Distances (Å)
  C1 H2 Br3 Br4
C11.09231.87931.8793
H21.09232.55152.5515
Br31.87932.55153.2583
Br41.87932.55153.2583

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 115.772 H2 C1 Br4 115.772
Br3 C1 Br4 120.201
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.181      
2 H 0.105      
3 Br 0.038      
4 Br 0.038      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.504 0.553 0.000 0.748
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -42.962 -0.965 0.000
y -0.965 -40.458 0.000
z 0.000 0.000 -40.612
Traceless
 xyz
x -2.427 -0.965 0.000
y -0.965 1.329 0.000
z 0.000 0.000 1.098
Polar
3z2-r22.197
x2-y2-2.504
xy-0.965
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.310 -0.206 0.000
y -0.206 4.803 0.000
z 0.000 0.000 9.644


<r2> (average value of r2) Å2
<r2> 219.994
(<r2>)1/2 14.832