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

using model chemistry: BLYP/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 BLYP/TZVP
 hartrees
Energy at 0K-5186.997857
Energy at 298.15K 
HF Energy-5186.997857
Nuclear repulsion energy331.237589
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 BLYP/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' 3132 3125 0.58 109.31 0.28 0.43
2 A' 598 596 11.93 4.67 0.48 0.65
3 A' 425 423 23.56 17.41 0.07 0.13
4 A' 176 176 0.06 6.03 0.52 0.68
5 A" 1145 1142 51.91 1.24 0.75 0.86
6 A" 690 688 164.20 3.86 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 3082.8 cm-1
Scaled (by 0.9975) Zero Point Vibrational Energy (zpe) 3075.1 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 BLYP/TZVP
ABC
1.25411 0.03931 0.03815

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.007 0.842 0.000
H2 -0.534 1.784 0.000
Br3 0.007 -0.098 1.648
Br4 0.007 -0.098 -1.648

Atom - Atom Distances (Å)
  C1 H2 Br3 Br4
C11.08651.89701.8970
H21.08652.55922.5592
Br31.89702.55923.2959
Br41.89702.55923.2959

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 115.437 H2 C1 Br4 115.437
Br3 C1 Br4 120.617
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/TZVP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.211      
2 H 0.179      
3 Br 0.016      
4 Br 0.016      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.532 0.530 0.000 0.751
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -43.802 -1.073 0.000
y -1.073 -41.317 0.000
z 0.000 0.000 -41.461
Traceless
 xyz
x -2.413 -1.073 0.000
y -1.073 1.314 0.000
z 0.000 0.000 1.099
Polar
3z2-r22.198
x2-y2-2.485
xy-1.073
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.166 -0.112 0.000
y -0.112 5.555 0.000
z 0.000 0.000 11.300


<r2> (average value of r2) Å2
<r2> 224.848
(<r2>)1/2 14.995