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 LiI (Lithium Iodide)

using model chemistry: PBEPBEultrafine/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 PBEPBEultrafine/cc-pVTZ-PP
 hartrees
Energy at 0K-303.266086
Energy at 298.15K 
HF Energy-303.266086
Nuclear repulsion energy16.541791
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 PBEPBEultrafine/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 488 488 90.67 38.52 0.14 0.25

Unscaled Zero Point Vibrational Energy (zpe) 244.0 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 244.0 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 PBEPBEultrafine/cc-pVTZ-PP
B
0.44047

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

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Li1 0.000 0.000 -2.271
I2 0.000 0.000 0.129

Atom - Atom Distances (Å)
  Li1 I2
Li12.3993
I22.3993

picture of Lithium Iodide state 1 conformation 1
More geometry information
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBEultrafine/cc-pVTZ-PP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Li 0.280      
2 I -0.280      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.000 0.000 -6.913 6.913
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -32.377 0.000 0.000
y 0.000 -32.377 0.000
z 0.000 0.000 -10.466
Traceless
 xyz
x -10.956 0.000 0.000
y 0.000 -10.956 0.000
z 0.000 0.000 21.911
Polar
3z2-r243.822
x2-y20.000
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.940 0.000 0.000
y 0.000 6.940 0.000
z 0.000 0.000 8.587


<r2> (average value of r2) Å2
<r2> 31.542
(<r2>)1/2 5.616