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

using model chemistry: BLYP/aug-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 BLYP/aug-cc-pVTZ
 hartrees
Energy at 0K-5187.099166
Energy at 298.15K 
HF Energy-5187.099166
Nuclear repulsion energy332.562533
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/aug-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' 3129 3119 0.58 98.92 0.23 0.37
2 A' 602 600 8.58 4.69 0.12 0.22
3 A' 428 426 17.89 17.68 0.12 0.21
4 A' 176 175 0.04 3.92 0.36 0.53
5 A" 1136 1133 50.60 0.13 0.75 0.86
6 A" 701 699 144.78 1.39 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 3086.1 cm-1
Scaled (by 0.9966) Zero Point Vibrational Energy (zpe) 3075.6 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/aug-cc-pVTZ
ABC
1.25710 0.03965 0.03848

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.007 0.841 0.000
H2 -0.532 1.782 0.000
Br3 0.007 -0.098 1.641
Br4 0.007 -0.098 -1.641

Atom - Atom Distances (Å)
  C1 H2 Br3 Br4
C11.08471.89021.8902
H21.08472.55282.5528
Br31.89022.55283.2815
Br41.89022.55283.2815

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 115.529 H2 C1 Br4 115.529
Br3 C1 Br4 120.459
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/aug-cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.630      
2 H 0.231      
3 Br 0.200      
4 Br 0.200      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.437 0.542 0.000 0.697
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -43.817 -0.985 0.000
y -0.985 -41.473 0.000
z 0.000 0.000 -41.871
Traceless
 xyz
x -2.145 -0.985 0.000
y -0.985 1.371 0.000
z 0.000 0.000 0.774
Polar
3z2-r21.548
x2-y2-2.344
xy-0.985
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.817 -0.052 0.000
y -0.052 7.756 0.000
z 0.000 0.000 13.010


<r2> (average value of r2) Å2
<r2> 223.293
(<r2>)1/2 14.943