return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

All results from a given calculation for IF (Iodine monofluoride)

using model chemistry: CCD/6-311G*

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/6-311G*
 hartrees
Energy at 0K-7016.639120
Energy at 298.15K-7016.637305
HF Energy-7016.225160
Nuclear repulsion energy128.669321
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/6-311G*
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 606 579 20.49      

Unscaled Zero Point Vibrational Energy (zpe) 302.9 cm-1
Scaled (by 0.9551) Zero Point Vibrational Energy (zpe) 289.3 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/6-311G*
B
0.26508

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCD/6-311G*

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
I1 0.000 0.000 0.285
F2 0.000 0.000 -1.677

Atom - Atom Distances (Å)
  I1 F2
I11.9618
F21.9618

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