Abstract
Abstract The adsorption capability of α -diimines N- ethylamine-1,2-dimethyl- α -diimine, N- ethylhydroxy-1,2-dimethyl- α -diimine and N- ethylthiol-1,2-dimethyl- α -diimine over iron-clusters was studied by DFT. The results show that since these compounds possess suitable structural and electronic parameters for metal adhesion, α -diimines strongly adsorb over the metal clusters. Moreover, the calculated binding energy supports the existence of a bond between α -diimine and the iron metal, consisting of the transfer of high-charge density which in the delocalization region (N1 C2–C3 N4) is formed by p (nitrogen) and π (C N) to the metal (L(σ) → Fe). Furthermore, the binding nature of the compounds with the metal is then confirmed in molecular orbital studies by detecting the overlap of HOMO (diimines) with LUMO (iron).
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