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

using model chemistry: QCISD/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 QCISD/cc-pVTZ-PP
 hartrees
Energy at 0K-710.619541
Energy at 298.15K 
HF Energy-710.177381
Nuclear repulsion energy133.418311
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 QCISD/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 278 278 1.35      

Unscaled Zero Point Vibrational Energy (zpe) 139.1 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 139.1 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 QCISD/cc-pVTZ-PP
B
0.05638

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

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
I1 0.000 0.000 0.986
Br2 0.000 0.000 -1.493

Atom - Atom Distances (Å)
  I1 Br2
I12.4789
Br22.4789

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