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

using model chemistry: ROHF/cc-pVDZ

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/cc-pVDZ
 hartrees
Energy at 0K-5183.161843
Energy at 298.15K 
HF Energy-5183.161843
Nuclear repulsion energy336.310540
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/cc-pVDZ
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
A' 3381 2910 1.87      
A' 699 601 16.47      
A' 585 504 7.36      
A' 194 167 0.06      
A" 1266 1090 77.09      
A" 811 698 110.86      

Unscaled Zero Point Vibrational Energy (zpe) 3468.1 cm-1
Scaled (by 0.8607) Zero Point Vibrational Energy (zpe) 2985.0 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 ROHF/cc-pVDZ
ABC
1.23466 0.04078 0.03952

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.008 0.853 0.000
H2 -0.579 1.760 0.000
Br3 0.008 -0.098 1.618
Br4 0.008 -0.098 -1.618

Atom - Atom Distances (Å)
  C1 H2 Br3 Br4
C11.08041.87691.8769
H21.08042.53312.5331
Br31.87692.53313.2358
Br41.87692.53313.2358

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 115.194 H2 C1 Br4 115.194
Br3 C1 Br4 119.088
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at ROHF/cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.129      
2 H 0.131      
3 Br -0.001      
4 Br -0.001      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.510 0.942 0.000 1.071
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -43.520 -1.029 0.000
y -1.029 -40.697 0.000
z 0.000 0.000 -42.287
Traceless
 xyz
x -2.028 -1.029 0.000
y -1.029 2.207 0.000
z 0.000 0.000 -0.179
Polar
3z2-r2-0.357
x2-y2-2.823
xy-1.029
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> 218.055
(<r2>)1/2 14.767