Theoretical Study of Hydrogenated Tetrahedral Aluminum Clusters

TL;DR

This paper uses ab initio calculations to analyze the structures and bonding of hydrogenated aluminum clusters, revealing how hydrogen adsorption affects stability and bond characteristics.

Contribution

It provides a detailed theoretical analysis of aluminum hydrides derived from Al4 clusters, including stability trends and bond analysis using electronic stress tensor methods.

Findings

Stability of aluminum hydrides increases with hydrogen adsorption

Al-H bond stability decreases as more hydrogen atoms are added

Electronic stress tensor analysis offers insights into chemical bonding

Abstract

We report on the structures of aluminum hydrides derived from a tetrahedral aluminum Al4 cluster using ab initio quantum chemical calculation. Our calculation of binding energies of the aluminum hydrides reveals that stability of these hydrides increases as more hydrogen atoms are adsorbed, while stability of Al-H bonds decreases. We also analyze and discuss the chemical bonds of those clusters by using recently developed method based on the electronic stress tensor.