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

using model chemistry: HF/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 HF/aug-cc-pVTZ
 hartrees
Energy at 0K-5183.335273
Energy at 298.15K 
HF Energy-5183.335273
Nuclear repulsion energy337.331765
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 HF/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' 3366 3065 1.11 84.20 0.20 0.34
2 A' 651 592 8.42 7.60 0.07 0.13
3 A' 501 457 13.42 11.05 0.13 0.23
4 A' 194 176 0.12 2.46 0.35 0.52
5 A" 1279 1165 79.72 0.10 0.75 0.86
6 A" 826 752 91.18 3.02 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 3408.4 cm-1
Scaled (by 0.9104) Zero Point Vibrational Energy (zpe) 3103.0 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 HF/aug-cc-pVTZ
ABC
1.27249 0.04089 0.03965

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.006 0.836 0.000
H2 -0.486 1.785 0.000
Br3 0.006 -0.097 1.616
Br4 0.006 -0.097 -1.616

Atom - Atom Distances (Å)
  C1 H2 Br3 Br4
C11.06901.86571.8657
H21.06902.52862.5286
Br31.86572.52863.2317
Br41.86572.52863.2317

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 116.343 H2 C1 Br4 116.343
Br3 C1 Br4 120.011
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/aug-cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.562      
2 H 0.362      
3 Br 0.100      
4 Br 0.100      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.380 0.957 0.000 1.030
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -43.798 -0.892 0.000
y -0.892 -40.845 0.000
z 0.000 0.000 -42.759
Traceless
 xyz
x -1.996 -0.892 0.000
y -0.892 2.434 0.000
z 0.000 0.000 -0.438
Polar
3z2-r2-0.875
x2-y2-2.953
xy-0.892
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.180 -0.077 0.000
y -0.077 6.914 0.000
z 0.000 0.000 10.663


<r2> (average value of r2) Å2
<r2> 217.567
(<r2>)1/2 14.750