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

using model chemistry: B97D3/STO-3G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 2A'
Energy calculated at B97D3/STO-3G
 hartrees
Energy at 0K-5132.798483
Energy at 298.15K 
HF Energy-5132.798483
Nuclear repulsion energy330.240738
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 B97D3/STO-3G
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' 3305 3305 1.25 45.78 0.39 0.56
2 A' 668 668 16.03 4.56 0.41 0.58
3 A' 469 469 9.37 10.19 0.10 0.18
4 A' 196 196 0.25 3.21 0.61 0.76
5 A" 1292 1292 66.23 5.83 0.75 0.86
6 A" 853 853 115.13 2.90 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 3391.8 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 3391.8 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 B97D3/STO-3G
ABC
1.27677 0.03896 0.03785

See section I.F.4 to change rotational constant units
Geometric Data calculated at B97D3/STO-3G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.008 0.831 0.000
H2 -0.582 1.771 0.000
Br3 0.008 -0.097 1.655
Br4 0.008 -0.097 -1.655

Atom - Atom Distances (Å)
  C1 H2 Br3 Br4
C11.10911.89761.8976
H21.10912.56422.5642
Br31.89762.56423.3106
Br41.89762.56423.3106

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 114.472 H2 C1 Br4 114.472
Br3 C1 Br4 121.452
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B97D3/STO-3G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.195      
2 H 0.090      
3 Br 0.052      
4 Br 0.052      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.467 0.513 0.000 0.694
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -38.480 -0.624 0.000
y -0.624 -37.579 0.000
z 0.000 0.000 -39.047
Traceless
 xyz
x -0.167 -0.624 0.000
y -0.624 1.184 0.000
z 0.000 0.000 -1.017
Polar
3z2-r2-2.034
x2-y2-0.900
xy-0.624
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 0.650 -0.164 0.000
y -0.164 1.747 0.000
z 0.000 0.000 5.620


<r2> (average value of r2) Å2
<r2> 224.041
(<r2>)1/2 14.968