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

using model chemistry: ROHF/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 2A'
Energy calculated at ROHF/6-31G*
 hartrees
Energy at 0K-5178.165790
Energy at 298.15K 
HF Energy-5178.165790
Nuclear repulsion energy337.447734
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 ROHF/6-31G*
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
A' 3422 3047 2.35      
A' 707 630 15.74      
A' 589 525 6.15      
A' 199 177 0.07      
A" 1298 1156 81.25      
A" 803 715 108.99      

Unscaled Zero Point Vibrational Energy (zpe) 3509.0 cm-1
Scaled (by 0.8904) Zero Point Vibrational Energy (zpe) 3124.4 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 ROHF/6-31G*
ABC
1.22105 0.04115 0.03986

See section I.F.4 to change rotational constant units
Geometric Data calculated at ROHF/6-31G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.008 0.861 0.000
H2 -0.584 1.753 0.000
Br3 0.008 -0.099 1.611
Br4 0.008 -0.099 -1.611

Atom - Atom Distances (Å)
  C1 H2 Br3 Br4
C11.07051.87471.8747
H21.07052.52432.5243
Br31.87472.52433.2210
Br41.87472.52433.2210

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 115.239 H2 C1 Br4 115.239
Br3 C1 Br4 118.429
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at ROHF/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.121      
2 H 0.252      
3 Br -0.066      
4 Br -0.066      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.503 0.987 0.000 1.108
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -43.350 -1.033 0.000
y -1.033 -40.451 0.000
z 0.000 0.000 -42.267
Traceless
 xyz
x -1.991 -1.033 0.000
y -1.033 2.357 0.000
z 0.000 0.000 -0.366
Polar
3z2-r2-0.733
x2-y2-2.899
xy-1.033
xz0.000
yz0.000


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


<r2> (average value of r2) Å2
<r2> 216.358
(<r2>)1/2 14.709