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All results from a given calculation for CBr4 (Carbon tetrabromide)

using model chemistry: LSDA/cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes TD 1A1
Energy calculated at LSDA/cc-pVTZ
 hartrees
Energy at 0K-10323.458267
Energy at 298.15K 
HF Energy-10323.458267
Nuclear repulsion energy1470.908276
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 LSDA/cc-pVTZ
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A1 280 277 0.00      
2 E 122 121 0.00      
2 E 122 121 0.00      
3 T2 664 657 121.14      
3 T2 664 657 121.14      
3 T2 664 657 121.14      
4 T2 183 181 0.17      
4 T2 183 181 0.17      
4 T2 183 181 0.17      

Unscaled Zero Point Vibrational Energy (zpe) 1533.0 cm-1
Scaled (by 0.9891) Zero Point Vibrational Energy (zpe) 1516.3 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 LSDA/cc-pVTZ
ABC
0.02170 0.02170 0.02170

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

Point Group is Td

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.000
Br2 1.109 1.109 1.109
Br3 -1.109 -1.109 1.109
Br4 -1.109 1.109 -1.109
Br5 1.109 -1.109 -1.109

Atom - Atom Distances (Å)
  C1 Br2 Br3 Br4 Br5
C11.92151.92151.92151.9215
Br21.92153.13773.13773.1377
Br31.92153.13773.13773.1377
Br41.92153.13773.13773.1377
Br51.92153.13773.13773.1377

picture of Carbon tetrabromide state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
Br2 C1 Br3 109.471 Br2 C1 Br4 109.471
Br2 C1 Br5 109.471 Br3 C1 Br4 109.471
Br3 C1 Br5 109.471 Br4 C1 Br5 109.471
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at LSDA/cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.333      
2 Br 0.083      
3 Br 0.083      
4 Br 0.083      
5 Br 0.083      


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


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -76.760 0.000 0.000
y 0.000 -76.760 0.000
z 0.000 0.000 -76.760
Traceless
 xyz
x 0.000 0.000 0.000
y 0.000 0.000 0.000
z 0.000 0.000 0.000
Polar
3z2-r20.000
x2-y20.000
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 12.893 0.000 0.000
y 0.000 12.893 0.000
z 0.000 0.000 12.893


<r2> (average value of r2) Å2
<r2> 564.828
(<r2>)1/2 23.766