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

using model chemistry: B3PW91/6-31G**

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 B3PW91/6-31G**
 hartrees
Energy at 0K-2572.290833
Energy at 298.15K-2572.293811
HF Energy-2572.290833
Nuclear repulsion energy13.107548
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 B3PW91/6-31G**
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 2710 2597 6.30      

Unscaled Zero Point Vibrational Energy (zpe) 1354.7 cm-1
Scaled (by 0.9584) Zero Point Vibrational Energy (zpe) 1298.4 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 B3PW91/6-31G**
B
8.48451

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/6-31G**

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 0.000 0.000 -1.374
Br2 0.000 0.000 0.039

Atom - Atom Distances (Å)
  H1 Br2
H11.4130
Br21.4130

picture of hydrogen bromide state 1 conformation 1
More geometry information
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/6-31G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.208      
2 Br -0.208      


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 -1.042 1.042
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -19.564 0.000 0.000
y 0.000 -19.564 0.000
z 0.000 0.000 -15.311
Traceless
 xyz
x -2.126 0.000 0.000
y 0.000 -2.126 0.000
z 0.000 0.000 4.252
Polar
3z2-r28.505
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 1.920 0.000 0.000
y 0.000 1.920 0.000
z 0.000 0.000 2.797


<r2> (average value of r2) Å2
<r2> 13.275
(<r2>)1/2 3.643