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

using model chemistry: CCSD(T)/SDD

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 CCSD(T)/SDD
 hartrees
Energy at 0K-24.358164
Energy at 298.15K-24.358932
HF Energy-24.293899
Nuclear repulsion energy9.582416
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 CCSD(T)/SDD
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 197 186        

Unscaled Zero Point Vibrational Energy (zpe) 98.6 cm-1
Scaled (by 0.9431) Zero Point Vibrational Energy (zpe) 93.0 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 CCSD(T)/SDD
B
0.04729

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCSD(T)/SDD

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
I1 0.000 0.000 1.077
Br2 0.000 0.000 -1.630

Atom - Atom Distances (Å)
  I1 Br2
I12.7067
Br22.7067

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