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All results from a given calculation for Br2 (Bromine diatomic)

using model chemistry: PBEPBE/3-21G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes D*H 1Σg
Energy calculated at PBEPBE/3-21G*
 hartrees
Energy at 0K-5123.250760
Energy at 298.15K 
HF Energy-5123.250760
Nuclear repulsion energy283.207630
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 PBEPBE/3-21G*
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 Σg 341 325 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 170.3 cm-1
Scaled (by 0.9535) Zero Point Vibrational Energy (zpe) 162.4 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 PBEPBE/3-21G*
B
0.08154

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBEPBE/3-21G*

Point Group is D∞h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Br1 0.000 0.000 1.144
Br2 0.000 0.000 -1.144

Atom - Atom Distances (Å)
  Br1 Br2
Br12.2889
Br22.2889

picture of Bromine diatomic state 1 conformation 1
More geometry information
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/3-21G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Br 0.000      
2 Br 0.000      


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 -36.308 0.000 0.000
y 0.000 -36.308 0.000
z 0.000 0.000 -31.189
Traceless
 xyz
x -2.560 0.000 0.000
y 0.000 -2.560 0.000
z 0.000 0.000 5.120
Polar
3z2-r210.239
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 2.749 0.000 0.000
y 0.000 2.749 0.000
z 0.000 0.000 6.926


<r2> (average value of r2) Å2
<r2> 113.298
(<r2>)1/2 10.644