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

using model chemistry: ROHF/TZVP

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/TZVP
 hartrees
Energy at 0K-5183.224767
Energy at 298.15K 
HF Energy-5183.224767
Nuclear repulsion energy336.149813
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/TZVP
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
A' 3376 3376 1.17      
A' 696 696 14.91      
A' 577 577 7.49      
A' 194 194 0.07      
A" 1291 1291 87.02      
A" 811 811 110.97      

Unscaled Zero Point Vibrational Energy (zpe) 3472.2 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 3472.2 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/TZVP
ABC
1.24772 0.04067 0.03943

See section I.F.4 to change rotational constant units
Geometric Data calculated at ROHF/TZVP

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.007 0.849 0.000
H2 -0.562 1.755 0.000
Br3 0.007 -0.098 1.620
Br4 0.007 -0.098 -1.620

Atom - Atom Distances (Å)
  C1 H2 Br3 Br4
C11.07031.87631.8763
H21.07032.52622.5262
Br31.87632.52623.2401
Br41.87632.52623.2401

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 115.290 H2 C1 Br4 115.290
Br3 C1 Br4 119.411
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at ROHF/TZVP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.033      
2 H 0.155      
3 Br -0.061      
4 Br -0.061      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.490 1.015 0.000 1.127
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -43.753 -1.036 0.000
y -1.036 -40.871 0.000
z 0.000 0.000 -42.769
Traceless
 xyz
x -1.933 -1.036 0.000
y -1.036 2.390 0.000
z 0.000 0.000 -0.457
Polar
3z2-r2-0.914
x2-y2-2.882
xy-1.036
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> 218.638
(<r2>)1/2 14.786