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

using model chemistry: BLYP/6-31G(2df,p)

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/6-31G(2df,p)
 hartrees
Energy at 0K-5182.389015
Energy at 298.15K 
HF Energy-5182.389015
Nuclear repulsion energy336.820348
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/6-31G(2df,p)
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' 3136 3119 0.67 88.80 0.28 0.44
2 A' 617 613 7.26 5.54 0.19 0.32
3 A' 398 396 19.52 13.11 0.10 0.19
4 A' 183 182 0.06 3.61 0.40 0.58
5 A" 1156 1149 45.81 1.50 0.75 0.86
6 A" 751 746 122.39 1.31 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 3119.7 cm-1
Scaled (by 0.9945) Zero Point Vibrational Energy (zpe) 3102.6 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/6-31G(2df,p)
ABC
1.26725 0.04078 0.03954

See section I.F.4 to change rotational constant units
Geometric Data calculated at BLYP/6-31G(2df,p)

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.006 0.834 0.000
H2 -0.488 1.804 0.000
Br3 0.006 -0.097 1.618
Br4 0.006 -0.097 -1.618

Atom - Atom Distances (Å)
  C1 H2 Br3 Br4
C11.08871.86711.8671
H21.08872.54532.5453
Br31.86712.54533.2361
Br41.86712.54533.2361

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 116.397 H2 C1 Br4 116.397
Br3 C1 Br4 120.131
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.354      
2 H 0.148      
3 Br 0.103      
4 Br 0.103      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.399 0.575 0.000 0.699
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -42.587 -0.847 0.000
y -0.847 -40.192 0.000
z 0.000 0.000 -41.017
Traceless
 xyz
x -1.983 -0.847 0.000
y -0.847 1.610 0.000
z 0.000 0.000 0.372
Polar
3z2-r20.745
x2-y2-2.395
xy-0.847
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.221 -0.169 0.000
y -0.169 6.323 0.000
z 0.000 0.000 11.135


<r2> (average value of r2) Å2
<r2> 217.377
(<r2>)1/2 14.744