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All results from a given calculation for IBr (Iodine monobromide)

using model chemistry: PBE1PBE/cc-pVTZ-PP

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 PBE1PBE/cc-pVTZ-PP
 hartrees
Energy at 0K-712.556275
Energy at 298.15K 
HF Energy-712.556275
Nuclear repulsion energy133.970869
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 PBE1PBE/cc-pVTZ-PP
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 281 281 1.51      

Unscaled Zero Point Vibrational Energy (zpe) 140.4 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 140.4 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 PBE1PBE/cc-pVTZ-PP
B
0.05685

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBE1PBE/cc-pVTZ-PP

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
I1 0.000 0.000 0.982
Br2 0.000 0.000 -1.487

Atom - Atom Distances (Å)
  I1 Br2
I12.4687
Br22.4687

picture of Iodine monobromide state 1 conformation 1
More geometry information
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBE1PBE/cc-pVTZ-PP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 I 0.098      
2 Br -0.098      


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 0.625 0.625
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -45.655 0.000 0.000
y 0.000 -45.655 0.000
z 0.000 0.000 -39.790
Traceless
 xyz
x -2.933 0.000 0.000
y 0.000 -2.933 0.000
z 0.000 0.000 5.865
Polar
3z2-r211.731
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 5.361 0.000 0.000
y 0.000 5.361 0.000
z 0.000 0.000 10.379


<r2> (average value of r2) Å2
<r2> 106.664
(<r2>)1/2 10.328