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

using model chemistry: CCD/CEP-121G

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 CCD/CEP-121G
 hartrees
Energy at 0K-24.396360
Energy at 298.15K-24.397150
HF Energy-24.333546
Nuclear repulsion energy9.688373
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 CCD/CEP-121G
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 209 197 0.05      

Unscaled Zero Point Vibrational Energy (zpe) 104.6 cm-1
Scaled (by 0.9431) Zero Point Vibrational Energy (zpe) 98.6 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 CCD/CEP-121G
B
0.04837

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCD/CEP-121G

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
I1 0.000 0.000 1.064
Br2 0.000 0.000 -1.612

Atom - Atom Distances (Å)
  I1 Br2
I12.6764
Br22.6764

picture of Iodine monobromide state 1 conformation 1
More geometry information
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability