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

using model chemistry: B2PLYP/STO-3G

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/STO-3G
 hartrees
Energy at 0K-5129.468959
Energy at 298.15K 
HF Energy-5129.446978
Nuclear repulsion energy332.382310
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/STO-3G
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' 3438 3438 0.56 42.70 0.36 0.53
2 A' 676 676 14.61 4.90 0.31 0.47
3 A' 476 476 9.12 6.11 0.14 0.25
4 A' 200 200 0.41 2.81 0.62 0.76
5 A" 1341 1341 84.19 6.25 0.75 0.86
6 A" 910 910 96.96 2.69 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 3520.3 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 3520.3 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/STO-3G
ABC
1.29984 0.03944 0.03831

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP/STO-3G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.007 0.821 0.000
H2 -0.511 1.793 0.000
Br3 0.007 -0.096 1.645
Br4 0.007 -0.096 -1.645

Atom - Atom Distances (Å)
  C1 H2 Br3 Br4
C11.10141.88331.8833
H21.10142.55782.5578
Br31.88332.55783.2905
Br41.88332.55783.2905

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 115.440 H2 C1 Br4 115.440
Br3 C1 Br4 121.760
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B2PLYP/STO-3G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.188      
2 H 0.089      
3 Br 0.049      
4 Br 0.049      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.383 0.654 0.000 0.758
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -38.546 -0.537 -0.000
y -0.537 -37.460 0.007
z -0.000 0.007 -39.495
Traceless
 xyz
x -0.069 -0.537 -0.000
y -0.537 1.561 0.007
z -0.000 0.007 -1.492
Polar
3z2-r2-2.983
x2-y2-1.086
xy-0.537
xz-0.000
yz0.007


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 0.571 -0.165 0.001
y -0.165 1.650 0.003
z 0.001 0.003 5.069


<r2> (average value of r2) Å2
<r2> 221.689
(<r2>)1/2 14.889