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

using model chemistry: mPW1PW91/6-311G*

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 mPW1PW91/6-311G*
 hartrees
Energy at 0K-2574.905354
Energy at 298.15K-2574.908331
HF Energy-2574.905354
Nuclear repulsion energy12.956807
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 mPW1PW91/6-311G*
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 2607 2488 3.81      

Unscaled Zero Point Vibrational Energy (zpe) 1303.5 cm-1
Scaled (by 0.9544) Zero Point Vibrational Energy (zpe) 1244.1 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 mPW1PW91/6-311G*
B
8.29049

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/6-311G*

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 0.000 0.000 -1.390
Br2 0.000 0.000 0.040

Atom - Atom Distances (Å)
  H1 Br2
H11.4295
Br21.4295

picture of hydrogen bromide state 1 conformation 1
More geometry information
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/6-311G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.218      
2 Br -0.218      


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 -1.153 1.153
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -19.919 0.000 0.000
y 0.000 -19.919 0.000
z 0.000 0.000 -15.461
Traceless
 xyz
x -2.229 0.000 0.000
y 0.000 -2.229 0.000
z 0.000 0.000 4.458
Polar
3z2-r28.916
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 1.547 0.000 0.000
y 0.000 1.547 0.000
z 0.000 0.000 2.710


<r2> (average value of r2) Å2
<r2> 13.500
(<r2>)1/2 3.674