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II.A.1. (XV.A.)

Listing of experimental data for NaK (Sodium Potassium)

InChI=1S/K.Na [Na][K]
State Conformation
1Σ C*V
Enthalpy of formation (Hfg), Entropy, Integrated heat capacity (0 K to 298.15 K) (HH), Heat Capacity (Cp)
Property Value Uncertainty units Reference Comment
Information can also be found for this species in the NIST Chemistry Webbook
Vibrational levels (cm-1) vibrations
Mode Number Symmetry Frequency (cm-1) Frequency Reference Intensity (km mol-1) Int. unc. Intensity Reference Comment
1 Σ 124 webbook       we

vibrational zero-point energy: 62.1 cm-1
Calculated vibrational frequencies for NaK (Sodium Potassium).
Rotational Constants (cm-1) rotational constants
See section I.F.4 to change rotational constant units
A B C reference comment
  0.09050   webbook

Calculated rotational constants for NaK (Sodium Potassium).

Product of moments of inertia moments of inertia
186.2722amu Å2   3.09317E-38gm cm2

Geometric Data
picture of Sodium Potassium

Point Group C∞v

Internal coordinates
distances (r) in Å, angles (a) in degrees, dihedrals (d) in degrees
Description Value unc. Connectivity Reference Comment
Atom 1 Atom 2 Atom 3 Atom 4
rNaK 3.589 0.010 1 2 webbook re

Atom x (Å) y (Å) z (Å)
Na1 0.0000 0.0000 0.0000
K2 0.0000 0.0000 3.5890

Atom - Atom Distances bond lengths
Distances in Å
  Na1 K2
Na1   3.5890
K2 3.5890  

Calculated geometries for NaK (Sodium Potassium).

Bond descriptions
Examples: C-C single bond, C=C, double bond, C#C triple bond, C:C aromatic bond
Bond Type Count
Na-K 1

Atom 1 Atom 2
Na1 K2

Electronic energy levels (cm-1)
Energy (cm-1) Degeneracy reference description
0 1 webbook 1Σ

Ionization Energies (eV)
Ionization Energy I.E. unc. vertical I.E. v.I.E. unc. reference
4.416 0.000     webbook

Electron Affinity (eV)
Electron Affinity unc. reference
0.465 0.030 webbook

Dipole, Quadrupole and Polarizability
Electric dipole moment dipole
Dipole (Debye) Reference comment
2.667 webbook  

Calculated electric dipole moments for NaK (Sodium Potassium).
Electric quadrupole moment quadrupole
Calculated electric quadrupole moments for NaK (Sodium Potassium).

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