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

using model chemistry: TPSSh/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 TPSSh/cc-pVTZ
 hartrees
Energy at 0K-5186.895208
Energy at 298.15K 
HF Energy-5186.895208
Nuclear repulsion energy337.217227
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 TPSSh/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' 3204 3103 0.72 99.28 0.25 0.40
2 A' 623 603 8.35 5.38 0.25 0.40
3 A' 433 420 21.65 12.61 0.07 0.14
4 A' 182 176 0.08 3.73 0.49 0.66
5 A" 1173 1136 58.69 0.85 0.75 0.86
6 A" 762 738 134.39 1.59 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 3188.9 cm-1
Scaled (by 0.9683) Zero Point Vibrational Energy (zpe) 3087.8 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 TPSSh/cc-pVTZ
ABC
1.28058 0.04083 0.03960

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.007 0.831 0.000
H2 -0.495 1.788 0.000
Br3 0.007 -0.097 1.617
Br4 0.007 -0.097 -1.617

Atom - Atom Distances (Å)
  C1 H2 Br3 Br4
C11.08031.86431.8643
H21.08032.53342.5334
Br31.86432.53343.2341
Br41.86432.53343.2341

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 116.155 H2 C1 Br4 116.155
Br3 C1 Br4 120.317
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at TPSSh/cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.174      
2 H 0.140      
3 Br 0.017      
4 Br 0.017      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.438 0.671 0.000 0.801
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.640 -0.128 0.000
y -0.128 5.916 0.000
z 0.000 0.000 10.832


<r2> (average value of r2) Å2
<r2> 217.338
(<r2>)1/2 14.742