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

using model chemistry: TPSSh/Def2TZVPP

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/Def2TZVPP
 hartrees
Energy at 0K-5186.802576
Energy at 298.15K 
HF Energy-5186.802576
Nuclear repulsion energy337.377039
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/Def2TZVPP
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' 3205 3205 0.63 98.32 0.24 0.39
2 A' 622 622 7.84 4.62 0.18 0.31
3 A' 428 428 20.81 11.44 0.09 0.16
4 A' 182 182 0.08 3.50 0.46 0.63
5 A" 1174 1174 57.67 0.36 0.75 0.86
6 A" 763 763 131.41 1.85 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 3186.3 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 3186.3 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 TPSSh/Def2TZVPP
ABC
1.28378 0.04086 0.03963

See section I.F.4 to change rotational constant units
Geometric Data calculated at TPSSh/Def2TZVPP

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.006 0.829 0.000
H2 -0.490 1.789 0.000
Br3 0.006 -0.097 1.616
Br4 0.006 -0.097 -1.616

Atom - Atom Distances (Å)
  C1 H2 Br3 Br4
C11.08051.86291.8629
H21.08052.53292.5329
Br31.86292.53293.2329
Br41.86292.53293.2329

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 116.202 H2 C1 Br4 116.202
Br3 C1 Br4 120.383
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at TPSSh/Def2TZVPP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.100      
2 H 0.116      
3 Br -0.008      
4 Br -0.008      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.419 0.665 0.000 0.786
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 5.269 -0.093 0.000
y -0.093 6.351 0.000
z 0.000 0.000 11.165


<r2> (average value of r2) Å2
<r2> 217.185
(<r2>)1/2 14.737