Molecular graphs of Li n clusters (n=2–6) from the density and the molecular electrostatic potential

Abstract

The molecular graphs of the density and the molecular electrostatic potential of small lithium clusters up to the hexamer are presented. For the underlying topological analysis all-electron calculations were performed within the framework of Kohn-Sham density functional theory. The calculations employed the local level of theory. Ground state structures for small lithium clusters up to the hexamer are presented. A vibrational analysis was performed in order to characterize these clusters. Structural parameters, harmonic frequencies and molecular graphs of the density as well as the molecular electrostatic potential are reported. The differences in the topology of the electronic density, the molecular electrostatic potential and the corresponding molecular graphs of the studied lithium clusters are discussed.