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

using model chemistry: B1B95/aug-cc-pVTZ

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 B1B95/aug-cc-pVTZ
 hartrees
Energy at 0K-2575.153910
Energy at 298.15K-2575.156887
HF Energy-2575.153910
Nuclear repulsion energy13.062978
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 B1B95/aug-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 Σ 2675 2564 13.76      

Unscaled Zero Point Vibrational Energy (zpe) 1337.2 cm-1
Scaled (by 0.9585) Zero Point Vibrational Energy (zpe) 1281.8 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 B1B95/aug-cc-pVTZ
B
8.42691

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/aug-cc-pVTZ

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 0.000 0.000 -1.378
Br2 0.000 0.000 0.039

Atom - Atom Distances (Å)
  H1 Br2
H11.4178
Br21.4178

picture of hydrogen bromide state 1 conformation 1
More geometry information
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/aug-cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.052      
2 Br -0.052      


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 -0.850 0.850
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -19.856 0.000 0.000
y 0.000 -19.856 0.000
z 0.000 0.000 -15.794
Traceless
 xyz
x -2.031 0.000 0.000
y 0.000 -2.031 0.000
z 0.000 0.000 4.062
Polar
3z2-r28.123
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 3.448 0.000 0.000
y 0.000 3.448 0.000
z 0.000 0.000 3.734


<r2> (average value of r2) Å2
<r2> 13.510
(<r2>)1/2 3.676