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

using model chemistry: CBS-Q

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 CBS-Q
 hartrees
Energy at 0K-2573.464923
Energy at 298.15K-2573.461618
HF Energy-2570.550472
Nuclear repulsion energy13.154600
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 CBS-Q
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 2863 2863 3.40      

Unscaled Zero Point Vibrational Energy (zpe) 1431.4 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 1431.4 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 CBS-Q
B
8.40931

See section I.F.4 to change rotational constant units
Geometric Data calculated at CBS-Q

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 0.000 0.000 -1.369
Br2 0.000 0.000 0.039

Atom - Atom Distances (Å)
  H1 Br2
H11.4080
Br21.4080

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