Reversible hydrogen adsorption on Li-decorated T-graphene flake: The effect of electric field.

In the present work, we have studied a new allotrope of graphene, denoted as T-graphene (TG) flake as a versatile material in hydrogen storage. Recently, the metallic character of TG has been revealed. Our results show that the Li-decoration has a significant effect on the electronic properties of TG flake.

Microwave assisted convenient one-pot synthesis of coumarin derivatives via Pechmann condensation catalyzed by FeF3 under solvent-free conditions and antimicrobial activities of the products.

A rapid and efficient solvent-free one-pot synthesis of coumarin derivatives by Pechmann condensation reactions of phenols with ethyl acetoacetate using FeF3 as a catalyst under microwave irradiation is described. This one-pot synthesis on a solid inorganic support provides the products in good yields. The newly synthesized compounds were systematically characterized by IR, 1H-NMR, 13C-NMR, MS and elemental CHN analyses.