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All results from a given calculation for HBr (hydrogen bromide)

using model chemistry: PBEPBEultrafine/6-31G(2df,p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C*V 1Σ
Energy calculated at PBEPBEultrafine/6-31G(2df,p)
 hartrees
Energy at 0K-2572.058666
Energy at 298.15K-2572.061643
HF Energy-2572.058666
Nuclear repulsion energy13.036384
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 PBEPBEultrafine/6-31G(2df,p)
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 Σ 2628 2601 8.79      

Unscaled Zero Point Vibrational Energy (zpe) 1314.1 cm-1
Scaled (by 0.9897) Zero Point Vibrational Energy (zpe) 1300.6 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 PBEPBEultrafine/6-31G(2df,p)
B
8.39263

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBEPBEultrafine/6-31G(2df,p)

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 0.000 0.000 -1.381
Br2 0.000 0.000 0.039

Atom - Atom Distances (Å)
  H1 Br2
H11.4207
Br21.4207

picture of hydrogen bromide state 1 conformation 1
More geometry information
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBEultrafine/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.229      
2 Br -0.229      


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 -0.843 0.843
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -19.516 0.000 0.000
y 0.000 -19.516 0.000
z 0.000 0.000 -15.505
Traceless
 xyz
x -2.005 0.000 0.000
y 0.000 -2.005 0.000
z 0.000 0.000 4.011
Polar
3z2-r28.021
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 2.803 0.000 0.000
y 0.000 2.803 0.000
z 0.000 0.000 3.336


<r2> (average value of r2) Å2
<r2> 13.317
(<r2>)1/2 3.649